WHICH OIL PAN FOR 340 STROKER?

I am having difficulty finding an oil pan that is clearanced for my 340 stroker (416 cu. in.w/ 4 inch MP crank) and has provisions for a dipstick. The chassis is a 73 E-BODY.The car is a street cruiser and not intended to be raced.Any help would be appreciated.
Thanks
Author: ROADRCR