I agree, what I have seen on 4 cyl always something blowing off etc. at hi boost w a turbo and costs $ more. But face it every decent mod turbo setup puts down 150 to 200 whp on same hi boost. 22 to 28# range. W money and skill Buster did 1k on a stock mtr. No way a twin screw or whatever can do that cause a s/c takes pwr to turn it. There has got to be a decent plan and kit to do that. And imo to do 700 whp on pump 93. Buschur went 9's on pump 93 in a street evo 4 cyl. If he can do it we ought to.