318 Senior Project Build

cinimod2 said
Thanks for the advice I might have to start considering it now looking at everything I'd have to do to my 318.
If I were to do the switch would a 5.9 still bolt up to a a904 trans? I just had the transmission rebuilt a little over a year ago so I'm trying to keep that in the car as much as I would love to have a 4 speed.

You would need a B & M 360 flex plate to go between your crank and the torque convertor, a new Intake manifold, the engine mount brackets are different( left side ), The exhaust manifolds are different, and now you have to be sure the trans and rear, 8.25 I hope, can take the extra torque. Is milage a concern?