I have a 4.10 available from an '89 325iX
Fits on E24, all you need to do is change the output flanges, and rear cover and it bolts right up.
1986 328is (M20 Stroker)
1986 535i (5sp all original)
1990 325iX (Mint 5sp all original)
1989 325iX (Winter auto X car
2001 740i (Supercharged)
2004 X5 3.0i (The DD)