What vehicles had a HIPO 318?
AFAIK. '80's Police cars, Shelby Pickups, Ramchargers, the '68/'69 small chamber 318s with 2Brrls pulled hard. But anybody can bolt a windage tray to any LA, so it's not indicative of anything in particular beyond how that engine was built/modified; at least with out more information like casting numbers, and how far the pistons are down the bore at TDC...