[tdangle]

I have one of the GM crate engines the SP350/357. Lots of power but beware not a real smooth idle. The cam in is is ground on a 108 LSA making good torque but idle quality suffers. I have had it in for a year and a half with no issues. I personally wish I had gone with the 383 now, but at the time it was significantly higher priced. At that time they had no L31's in stock. I've heard blueprint has good engines.