This is the $17 Carter I have. Spec says its 7psi...My edelbrock carb says 6.5psi. Have had zero issues with the Carter FP
https://www.summitracing.com/parts/crt-m4685#overview
If your front block does not have the short 3/8" bolt you remove to then use a longer one to hold up the FP push rod so it does not drop when you pull FP...then use a glob of grease to hold it up to then put FP in. You will need the gasket for the FP mounting plate also as that has to come off to allow you to lift the PR up into the block once it drops when pulling FP. Easier if cam lobe is on base circle to swap a FP so the spring pressure of FP lever is less