B20 into an eg you will need:Originally Posted by E.G. KING
B20 Longblock
B series transmission
B series Axles and Radiator Hoses
B Series Shift Linkage
Youll want to reuse your OBD1 Wiring Harness from your SOHC.
To make it painless, sell/swap the:
Alternator
DIstributor
And it will be plug an play. The Alternator and DIstributor on a B20 is OBD2, so the plugs are different that whats on your wiring harness.
Depending on what year B20 you get , you might have to swap the Intake manifold for an LS.
ECU wise, just run an LS, the differences between and LS and a B20 are marginal.
To do it right, you SHOULD just buy a chipped ecu with a b20 map on it.