A return style regulator is mandatory here. You will not be able to boost reference a dead head style regulator.
I use the aeromotive drop in modules with their 340 pumps and had great results.
I like this pump and size for your goals
https://aeromotiveinc.com/product/phantom-200-stealth-fuel-system
And I’ve used this regulator up to 650hp and it’s excellent. Use the low pressure spring that comes with it. 3-20 psi.
Universal Return Style Regulator - Aeromotive, Inc
I know this stuff is expensive and you are on a budget, Hell we all are. But the fuel system is very important. Do some research and you’ll see how bad running lean in boost is. Do not skimp on fuel system parts. Buy once, cry once.
