sorry didnt get back here sooner. roadkill, im gathering parts up now for this 307.ive got more engines of all different makes sittin in my shop floor but this sbc has almost become a obsession with me.i loved the gassers from back in the early 60s so thats what im going to try and build.i wasnt old enough back in the day but im plenty old enough now..lol.but that replacing my sbc alot aint gonna happen.well let me reword that one.or atleast add this i hope it aint going to happen alot..lol. im going to ask it to make my time just alittle faster than they ran in the day,but allowing that part for better internal available today.but it will be old school race.im not askin it to do much more than ive asked any of mine to do.go fast and stay together.lol not to much to ask....oh and yeah buddy im a lover of old school as they call it nowdays.i love almost anything old. thats why i keep my wife..lol