I would not drive a car which has the
oil pan and or bell housing flange lower than the main frame. IOW if I wanted to buy such a car I would have a plan to correct the deficiency and the money to do it.
I know a lot of Cobra guys seem to feel this idea is for wusses, but why have a car that requires thought all the time to avoid damaging the pan. I recommend finding a car that has it all tucked up inside the frame where it belongs.