87 formula 3.8 turbo

["More Boost"]

ok, im wanting to put a GN motor in my 87 formula 350, will the GN crossover pipe fit my F-body? or is TTA crossover pipe different than GN? same for exhaust manifolds? i guess what im asking here is, what are the physical differences in the engines of these two cars? i know the heads are different but not sure why. any info would be appreciated,

 

["More Boost"]

ok, so i guess i posted this in wrong forum,

 

[Grumpy]

GN one fits .. I have a lot of the conversion parts if your interested