Thanks for the quick response. Ok, was just wondering if it required much more, and hadn't done any research (just lazy, I guess).Cheaper to go buy a 3L ob ready to go. All sorts of stuff doesn't match up and needs to be yanked, purchased and replaced to do that mod.
Get rebuilt 2.5 drop it in and save your self some money. Heck I could afford to go out and pay cash for a new 911 today and wouldn't even want to spend the time and money trying to fit a 3L into a 2.5 OB.