info on fitting a p75 tb on a cinq is in my blog https://www.fiatforum.com/blogs/craigb244/394-start.html
you can ignore a lot of it as i fitted the punto 75 tb to a spi manifold onto a p75 engine (old days
)
but a sorted p75 tb is imho better then a 40mm tb but it does take a lot more work.
the spacer will need some work depending on your induction kit
fitting a punto 75 4/2/1 manifold and downpipe is nice but requires some pipework (mine was bodged for a while till it all fell off after some enthusiastic driving at elan valley in wales
)
you can ignore a lot of it as i fitted the punto 75 tb to a spi manifold onto a p75 engine (old days
but a sorted p75 tb is imho better then a 40mm tb but it does take a lot more work.
the spacer will need some work depending on your induction kit
fitting a punto 75 4/2/1 manifold and downpipe is nice but requires some pipework (mine was bodged for a while till it all fell off after some enthusiastic driving at elan valley in wales