87' 5000 CSt auto tranny Q's
 

anyone know which trannys will fit the mc1 motor

i'm wondering about the wv quantum tranny will it hold up to the turbo or do i need a really beefy one?

Re: 87' 5000 CSt auto tranny Q's
 

Bentley manual has a chart comparing all of the different varietys of automatic trannys - a lot of the innards are similar but torque converters, valve bodies, and gear ratios vary by application. Also turbos use stronger components including planetary gears with additional "planet" gear; I think the clutch packs are different as well.

Personally I would rebuild what you have.