The only way you can go to hydraulic to my knowledge has already been discussed.
I do question this statement though.
thought a stud girdle was for high rpms this is a 632 it starts losing power at 6200 will the girdle still help ?
How do you know this? I aqm assuming you are talking about that it is a pump gas street engine and you have seen dyno charts? The dyno charts are not done with the complete car attached if you are talking about a crate engine from a known seller. If the horsepower peak is 6,200 rpm, it is still making power several more hundered rpm or should be.
Ed