K well you wont gain much BHP, prob about 120 with the std 8v head. If you port it you'll see more gains

The best thing about it is the boost in torque you'll get

Its actually piss easy on an 8v digifant, all you need is the bottom end from a MK3 2.0 GTI 8v, or a Passat, the engine code you're looking for is 2e. You use the 2e dizzy and drop your old head on it, and everything just plugs straight in

The only thing you need to worry about is the breather on the front of the block, you can either block it off with a plate from TSR, or fit the MK3 breather system and rocker cover, which is what I plan to do.