Scott I talked to a transmission guy ...who said they could provide a 4L80e to fit my Cadillac. I would imagine that same trans would fit your Olds and cost would be similiar to the Tremac...
I believe that is a standard latemodel 4L80e with an adapter. Unless a special case was made that I do not know about, the 4l80e never had a BOPC bolt pattern. You may want to ask. the only thing special would be the trans controller which are easy to find.
...I'm bulding a truck to pull a trailer. From the sound of your transmission choices I think you are building a hot rod...
No, I just dont like automatics, and would like an overdrive trans. My intention is to build a truck to pull my boat, haul parts and generally drive it.
... I'm just glad I don't feel the need to sell any toys!
If I dont sell the house in WI within a few months, I may have to - I feel like the guy in the lending tree commercials. "i'm in debt up to my eyeballs, somebody help me..."