Cam-wise, at the time (1999-2000) everybody, and I mean everybody, said a S2-head engine would be a dog on the street. My heads had been heavily ported (ASA) with 2.125 intakes and 1.650 exhaust valves, so I asked Tim Cole of Comp Cams what he thought. I went with his recomendation of 222/218.
As it turns out, I could have given up some bottom end. Power comes on very quickly, and is really too much on street tires. I guess I could get some DR's and that would help, as would a bigger A/R on the turbine housing (mine's a .69 now.)
I'll PM you with some other interesting info. :wink:
But I'd say to go for it. The only drrawback these days is headers. ATR's were available for around a grand back then. You're going to drop a couple of thousand now, I think, unless you can find some second-hand headers.