im about to order the innovetek water cooling kit and decided not to buy the radiator that was included...i want to buy a heater core which will be much cheaper than $50 but im confused about the fittings on the heater core. lots of ppl have said they use a chevy 86 heator core. i think it has a 1/2 and a 3/8 fitting on that heator core. how am i gonna use this heator core with the innovetek kit? can soemone help me or recommend me another heator core that performs good and has 2 3/8 fittings? will teh 3/8 tubing fit over teh 1/2? what can i do?