I'd get the gen 4. I have the sure fit & i am not impressed by the quality. I saw a gen 4 and it looks like a benz compared to the pinto-like sure fit that i have. I will be using a gen 4 in my current 69 project, but i have not actually used one as of yet. Frank, if youre still on, i have no heat on my sure fit. Any ideas on things to check? This was my first install & I may have reversed the hoses or am using the wrong vacuum source for the control valve.
Scott
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