200sx

[aerosam]

if you choose to keep the sierra front and rear hubs/driveline then the world is your oyster, why not go mad and use the 3.0 twin turbo from the 300zx (if it's available to you) as it has a low engine profile that may fit under the roadsters bonnet. I had a 300zx turbo some years ago and it was an animal in standard form, heaven knows what a roadster could do with that powerplant.

A few chassis mods and a custom propshaft and you can basically fit whatever engine/gearbox combination you like, it's just up to you to design and make them.

Personally I'm using an BMW V8 - I hope to prove that anything is possible! And I have not had to make that many chassis mods to accomodate it.