I have a bone stock 250. I don't have the expendable $$$ for head work, lumps, cam or any of that and figure the turbo is going to be the best HP per $ ratio of any part I could possibly get short of nitrous.
I just got a bell housing, flywheel and trans for free (4sp rock crusher!!!) so I may look into the Trail Bomb or Exploder thing since those rears should be readily available and I could get a driveshaft custom made from Speedway for like $100, which fits beautifully into the budget this car is being built under. Thanks for the tip. With the open drive line I may shoot for a little higher HP goals.