My engine is a SG1 109 motor I bought out of the junkyard for $50. It had the carb'd intake (N/A)... and the black GM crate motor valve covers.... std bore (although it needed boring)... and a real slick rolled fillet (rods and mains) turbo crank. I drilled the lifter valley for the turbo oil drainhose. It is great basis for a 109 engine to build...and best I can tell from alot of reading... will likely have the turbo crank.