Yes but I can't stress enough that you will need to buy the 4" pulley for the Whipple (about 150$ used or 200 new I believe). You can sell both of the smaller pulleys to pay for that easily. Alternatively you could sell the 4.0 and make money buying a 3.4 used Whipple and have more margin to play with....although I wouldn't because you can just buy race gas occasionally and throw the small pulley on for a ride on a live missile! Again, you will still likely be around 900-950 rwhp with the 4" pulley which is nutty enough!