I am looking into rebuilding (having it done by a professional) a 700 and putting it behind a slightly modified BBC. Estimated HP from engine is right at 500. I know the 700 in stock condition is only good for about 350 HP but I have seen a few kits (Monster is one) that are available that can supposedly handle 500+ HP. Kits are expensive though. Can anyone give me recommendations on options for overhaul kits that are a bit more "reasonable" in cost? I have heard Borg Warner sells (or the kits available contain certain BW parts) some for around $450-550. Would anyone have experience with these kits? Any recommendations? Again, I know the 700 is not the tranny of choice behind a BBC but I really want to try it. I have my gears and wheels set up for the extra gear. Will have another question regarding lock up after I can get squared away on this one. Thanks!!