Hey guys,
I'm wondering if anyone has any experience using the inline check valve from aeromotive. I did some testing with a fuel pressure gauge and determined that my check valve in the pump is probably my hard starting problem. (pump itself is operating at correct pressures once car is started and high rpms).

Question is : will these work alright in these cars, what size ( 6 or 10 AN fitting), and suggestions for best and easiest install locations?

Thanks!!!