So you are bound and determined to supercharge an engine with 10.7: 1 compression, and will not intercool the thing. I am assuming you've read Corky Bell's book where he talks about the intake charge reaching 1075 degrees F as a maximum during the compression stroke, otherwise damaging detonation will take place. Based upon the calculations that are talked about in his book, you can run about 4-5 psi without that intercooler max. That will give you more power, but probably not enough to justify the time, effort, and expense.
Well, hey man, that's cool- They are your pistons/cash to burn. Good luck-
I'm not a fan of superchargers, but am a boost junkie that is familiar with raptor s/c (they started selling intercooled & non-intercooled S/C kits for ej cars a long time ago on RS25.com). I've turbo'd quite a few cars, here are some real life observations I've made on my turbo conversions - OP good luck on the s/c conversion!
5psi can be very noticable on a high compression engine set-up - check out my MAP ej22 turbo parts list on RS25.com - I actually have a link to dyno runs of a stock longblock MAP ej16 that @ just 5psi made an additional 48ish WHP / 50+WTQ (went from like 80whp stock to 120whp @ 5psi(basically 1.5 times the stock power) & a number of OBS / EJ22 guys have used my parts list/advice to boost their ej22's...
I've measured similar gains on my own MAP ej222 @ 4.5psi & generally have come to expect about 10WHP per psi of boost added to a high compression 4 cyl engine when set-up properly.
I'd expect about 15WHP per psi on a 6cyl / 75whp @ 5psi on turbo'd car with a good tune, curious as to what the s/c will make in terms of power per psi of boost but I think raptor had dyno charts of ej 4cyls @ 5psi posted on RS25 a while back.
As far as intercooling I personally could not run over 7psi on my 10:1 CR 4cyl without detonation using a OEM WRX TMIC & had to use methanol injection to get the car to safely increase boost (My wagon has been turbo'd since 2004 & my initial goal was to safely run 5psi on the stock longblock which eventually was met & exceeded - like on the 2nd week of boost)