I have a 1990 Mustang 5.0 LX convertible with 16,000 original miles, and radiator started leaking, had redone. Due to age deciding to bypass heater core, before it leaks, while apart, everything about bypassing it looks the same as if I do it on my 86 Gt. I understand you probably can probably only bypass it at the back of the intake manifold and use something to make the inlet pipe go back though outlet pipe, but what have you used as the new heater hoses i have one is 5/8" and one is 3/4" inside diameter and the heater pipes behind intake are so close together. I don't want to do anything to permantlly alter car, but i don't want a heater core leak, and don't ever run car when heat is needed. Any help would be very appreciated, unfortunatly the heater core repacement and bypassing of them isn't nearly as easy as my 67 Mustangs are. Thanks Keith
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