the pan half moon rounded cutouts are the same on the front cuz the timing covers, the rounded portion at the bottom are the same (ex for the cast in timing marks on the front which dont affect this) & the halfmoon cutout is bigger in the rear on the 318 pan cuz of the wider rear main cap. also I've seen (2) 360 "center sump" 360 pass pans (maybe others) (& they ain't exactly centered) & on one the sump starts ~2" back from a vertical plumb line straight down from the very front of the pan seal lip and on the other it starts ~4" and both sumps are ~8" long & take different pickups. iirc the #'s are 392 (might be 394) and 876 (if I can find my notes I will clarify the #'s and which is 2" and which is 4"). My 83 318 pan starts ~4" back. EDIT 2" on the 876 pan and 4" on the 392 pan and a 318 pickup from a 4" pan (dont have the # in front of me) would likely work on the 392 360 pan (same bends/length) cuz the sump appears to be in the same location and depth