oilpan ?
CTS-V, as it has a shorter lower slump but is about 2" more in ground clearance than the Truck.
And then the F-Body, would be my next choices. F-Body maybe tight, depending on where you locate the engine (how far back you can go.) the lower slump is longer that the CTS-V and Truck.
But not the GTO, that is front slump.
Check the FAQ/Sticky for the Oil Pan Dimension (or S&P website).






