About two summers ago my 68 350 block cracked. I did some looking around and found an awesome place for a new long block. I went back with the same 350 and it was build to factory specs. The long block cost me $1,500 with $125 shipping. The warranty is the beat I have ever seen, even better then new crate motors. I had a lifter flatten out after a year and they covered parts and labor with no questions, they even helped diagnose the problem with my mechanic. Look up S&S Rebuilt Engines www.rebuiltautoengines.com I can not recommend them enough. They will build what ever you want. No, I don't work for them either.