I have a 98GT that I want to do a PI swap on.I have found cams,heads,and an intake for $350-400.Are these the most expensive parts to do a swap?I realize I will need plenty of other parts as well.Do these swaps gain 40hp?I wasn't going to do a swap but if I can do one for $800 or less I will.Is that a realistic figure to do a swap?I have a couple friends who should be able to do the work for very little(a couple cases of brew after they're done).