I am planning on stabbing my faceplated aluminum 18 splne 4 speed in the 68 GTS and need to convert it over to an a body case. I know i need a tail shaft housing and a mainshaft to start with. Is there anything else i am forgetting? Also, does the 23 spline trans use the same main shaft as an 18 spline. My faded memory sats no lol.

I should have bought the one for sale a few months ago and am kicking myself. Hate to pull apart a fresh trans but it needs to happen.

Thanks for any advice.