Anything 'works' if you menan will the engine run.
These will _probably_ hamper power as off about 3000-3500 rpm due to reversion issues.
Don't use them.
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
With a little work to the outside of the heat box section you can get Type 2 heat exchangers to fit with the bonus of a decent amount of heat in the winter...just make sure the shaped end of the manifolds is correct for your engine.