Best Automatic OD trans swap for A body car

A 4l80e fits, sort of.......as mentioned earlier a 4l60e is a better fit. You dont need to go thru Kiesler for it. The bellhousing, from what I remember, is a bolt on. Go to http://www.quicktimeinc.com/products.html#mopar and look for rm-9071 for a small block or rm-9073 for a big block. If you want to keep it fully functioning automatic just google 4l60e contol unit, you will find tci, baumann and a few others. If you dont mind it being a manual shift unit, just use a trans go 4l60e-3 kit, removes all the electronics.