if you want a quick and easy engine here you go http://store.summitracing.com/partdetail.asp?part=MLL-BP3472CT cost less than the 351 and has almost the same hp rating
How can that engine have a balanced rotating assembly when it doesn't come with a balancer? I had to provide the balancer before my engine could be balanced......????
Don't mean to be a stick in the mud, but you would be doing this for all the wrong reasons. Build it because you want to, and race it.... at a track.