thing is though son, I know it sounds like, oh wow I'd be able to boost like, all the way up to 10 psi....but I found it made point-oh-shite all of difference and unless you get one for 10 bucks, not worth chasing down.
I would suggest the adjustable kinugawa wastegate with the low-pressure spring, that will bolt on, give more responsive boost as well as some degree of adjustable boost control. They're only $100-something off ebay new.