ah..thats good to know...i just found out i have a line on a set of bowtie heads for $1000 64cc 180cc intake 2.02 & 1.64 valves they've done completely and are only about 1yr old... they might be a better idea i dont want my power at 6000... it is a heavy car and i like how my cam performs now i just know those 305 heads are really holding me back....as well as the pistons