Mean Green z28

iTrader: (17)

Doing a search on the trans my 81 ParkAve. has and I came found that it can either be a 200-4R and 700R4 (elec. TC lockup). I hope it has the 700R4, is there a code I could look for?
Are these transmissions rebuildable for F-bodies? I know the 700R4 is but what about the 200-4R?

this is the site I got the info from http://www.charlietranny.com/GM.htm