with 10-1 static I dont think you can do anything to keep it from detonating even at 5 lbs that little blower is spinning hard.

Got the cam specs from my buddy.

Solid Flat tappet
.581 in
.615 ex
244 intake, 256 exhaust @ .050

Total timing 34* he said.

A solid cam, 10:1 CR engine is really not a good platform for a small supercharger. The only reason to run a solid cam is to spin a lot of rpm. That supercharger is gonna make a lot of heat with more rpm and increase the risk of detonation.

I gained 9mph with my similar setup when adding the blowers. I run hypereutectic pistons too so there is clearly no detonation. My aluminum heads might be making the difference though and mine is half point less compression. I don't know that I would try this with iron heads and pump gas, but for me it has worked quite well. I am running 90mph now with a straight 1988 vee bottom. Blowers are spinning at 11850rpm at WOT and that seems to be ok.

Not sure, never ran into that. They are some small threads, I think I would have a carb shop do it unless you have your own machine shop.