Useable parts from '88 5th Ave. ???

What parts are useable from an '88 5th Ave. on a '71 Dart?

I'm about pick up one an I want to make sure I get the most I can out of it for my dart.

I Plan to use the 318, trans, disk brakes, rear drum brakes ......

The dart will have a spool mount k member, power steering, 8 1/4(from an a body) .....

How hard will it be to use the lock up trans?

Thanks,

C