I have a near stock 88 turbo 4cyl motor from 1979 and held damn fine with an lt1 a few weekends ago.. Hope youre building a good 350 lt1's were good for about 285 i thought. so yes there are fast 4 cylinders around, evil peter, ricochet, any sr20det,any wrx, evo, sti.. dont let the exhaust note fool ya.