518 Swap questions.

Hey guys,

My Aspen RT has a 360 LA with a 727. I’m thinking of a Overdrive Swap. If I want to change the transmission to an overdrive unit do I look for the ‘88-‘92 non lock-up 518 (so I can the same converter as my 727), or can I run a A500 (42RH)?? I’m thinking the 518 because it came behind a 360 right?
Author: MBDale