Lots of good comments and I appreciate them all!! I have a well built 383 stroker in my '28 Buick and I love it, but I wanted to do something else with the '64 Riviera, never had a big block and wanted to at least consider it. My buddies have told me that an LS series would be a smart option (maybe an LS3?) but I'm hesitant because I'm over my head with that technology. I'm not very smart about computer driven engines and stuff like fuel system requirements. I'm an old barnyard mechanic and the simpler it is, the more successful I'll be...... I'm not the sharpest knife in the drawer.