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they should fit just fine I read about that before that they add about 5mm Or so . With the offset of the Phone dial I had to make custom 20mm spacers so I did not rub on anything. SO i am guessing if they add anything i will just use less of a spacer or if i am lucky I will not need spacers anymore.

I am hopping i can get started on the rear the first part January Just have to wait and see I i run into any problems. I think i have all my bases covered..

parts for the rear so far:

thing transmission
944T axle assy
944 alum arms
4pot brembos
996 rear rotors
weld on irs tabs

Well I have started now on the IRS conversion with the 944 alum arm

The parts being used for the rear are as followed:

944 alum trailing arm
944t axle assembles cv to cv
996 rear rotors
944 4 pot brembos
thing trans
modified swing axle spring plates


first i started off by cleaning the arm and painting them up






painted arm with new bushing installed


removed all swing axle tranny and cleaned 40+ years of grease and grim


new weld in brackets


I was going to use 944 trailing arm but i have ran into a little problem already my torsion bar are to short. So for now i will use modified vw spring plates till i can get some upgrade torsion bars ordered and shipped. ( I will post pic on the spring plates once I start on them)

With the Irs conversion its going to be a little different from a Bug conversion. 1st. being the typ3 has a removable sub-frame and the bottom of the torsion tube has a extra support welding on.2ndthe frame horns top half is smaller then a regular Bug tube. this makes the weld in bracket sit a little higher then the tube and not inside like on a bug.



What i done was cut the metal away from the bracket and just folded it up and out of the way to start with that way once the bracket is tacked in place. And its time for final welding i can trim the metal down and hammer it down snug and weld it to the installed brackets. well thats the plan for now. Being like i said the bracket sits out and above the frame horns..



once i have everything where it need to be. Checked and double checked and then tack welded... I will assemble everything to check fitment and alignment of the arms.Hope to do that in the next day or two. After that I am just going to remove the rear sub frame for the clean up and welding....

some updates pic's

test fitting arm on modified swing axle spring plate




checking alignment before fully welding everything up

I think you may have an issue with wheel alignment if your weld-in pivot brackets are not correctly located.

The pivots need to locate in relation to the spring plate mounting location. If the pivots are too high (which it looks like now), you will have positive camber that can not be adjusted out. They need to locate just like a T1/T3 IRS despite the differences in the "shape" of the torsion housing.

yeah with the pic with the bracket.It is just sitting there its not welded in yet hopefully tomorrow i can get it tacked in place so i can pull the sub frame out. To do the final weld up.

sub frame out now


cleaned and waiting for treatment of kbs rust blast


I have also rounded up 6 of the 8 nos rubber bushing for the subframe going to see if i can get them all cast in urethane if it doesn't cost to much




number 62 in pic 1


number 63 in pic 1

a few more pics, as i progress with the conversion... subframe was treated with rust blast them painted with KBS ruststop. Checking in to have all the subframe mounts cast in urethane. Just to stiffen everything up in prep for the new motor when I start on that part of the project. Hope by next weekend to have everything finish on the IRS part of it so i can pre-assemble the subframe to check the axle and trans fitment. then moving on to some more body work

test fitting left side






cleaning up subframe


40 year old sub frame mount


NOS mount


seen better days these are the last 2 mounts i need to find.Being i have one good one might just have them cast in urethane


subframe painted in KBS ruststop

Lookin sweet dude.

good work.