blower/supercharger/turbos ,otherwise ,its about 400 to 450 hp at 9000 rpm depending on if it stays together.
Forged crank ,forged rods,forged pistons,good heads and some sort of huffer on the top 6oo to 800 hp.....a little sniff of n2o and you could hit 1000 hp..........of course this is a 20 to 30 thousand dollar engine,not sure if thats in the budgett or not.
350 375 hp is more in line with what this engine will produce, max normal effort,anything more and you are straight out wasting money and fighting for every last hp.