7.5mm fuel line works fine. If you have the crimp on style clamp a small pair of dikes you can pry them open. I am running 30 lbs of fuel pressure and after sitting for six hours the gauge says 28. Your injectors can be cleaned by soaking them with fuel injector additive overnight. Put the injectors standing up in a can and fill it almost to the plastic part(put can outside). If your a cheapo like me go to a you pull it type yard and you can find 72/73 450 se's with grimy engines and shiny injectors. At $6.50 a piece you can't go wrong.
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