Yup.... if you buy someone's 95-97 ECU *that has arlready been programed by JWT* it will cost $100 to have it reprogramed.
If you send them your 98 ecu it will cost $595 and they will send you a 97 *reprogramed* ecu.
Are you going to change you injectors? I think the stock DE's will only handle 5-6 psi. Not sure but Thats why I think JWT only programed the 99 G20 turbo(in SCC) with no IC and stock injectors to boost 6psi.
Check into that.
Mike