Yep that little IHI with induction kit & a good remap could get you up to 170-180bhp. But i have heard of a Hybrid IHI setup with larger intercooler, intake, 200 cel cat & larger bore exhaust system + remap - 200bhp is possible but not 250
3,800 I think its a fair price, mine is 72,901k and i've fiddled with it constantly and has given me no problems whatsoever. Doesn't need a specialist to service, I have serviced it myself every 6,000 miles with oil & filter change, brake fluid changed every year, spark plugs yearly also. I only have the first 2 years service history.
CJ