If you don't mind the look, something like this feeding right into an in-line EFI pump would do the trick on the cheap.

http://www.summitracing.com/int/parts/cee-4041

Or you can buy a new stock tank for 150 bucks, cut a hole in the top and install a sump and your own provisions for a universal in-tank pump.

http://www.summitracing.com/int/parts/aei-11142

Or make or buy something like this for a stock tank. Looks like the install would be pretty easy.

http://www.summitracing.com/int/parts/tnk-pa-6