E30 M3 drivetrain/engine/harnesses vs E30 M42

[Cobra Jet]

Is there a site or can someone lay out the differences between the E30 M3 drivetrain/engine/harnesses and those of the E30 M42?

The reason I am asking is, suppose there is a complete E30 M3 shell w/ no engine or trans (but everything else is there) - can one take the M42 components and drop them into the E30 M3 shell to get it drivable again?

OR

If one found an E30 M3 driveline - could it be easily installed into an E30 M42 shell?

For instance - what are the mechanical/eletrical/drivetrain differences between the two (besides the obvious engine physical & horsepower differences)?

Dash cluster?

Are the engine harnesses or body harnesses similar for a swap, or not?

What's the major difference w/ the M3 manual trans and the M42 manual trans?

Isn't the suspensions on both pretty much very similar?


Enlighten me.

[kowalski]

probably the engine mounts, other then that it would just be the harness for the engine.