+1 on the 351 stuff not working. Budget stroker kits are out there that make a 331/347 affordable. Balancing could cost extra on the cheaper kits. I feel that if you do not have the time/money to do it right the first time, when are you going to have the time and money to do it over? Not trying to discourage you from the hobby. It just sucks when you have to do things over like an engine swap.