Oil pan dimensions

You might look at Milodon 31002, it's for truck applications so rear sump, total depth it 5.5" and I believe the front section is 2.875".

http://www.summitracing.com/int/parts/mil-31002/overview/

I've been looking for something similar, but I'm in much the same boat, I need a rear sump oil pan with a very shallow front section and I think the only option is going to be to make one..