Going w/TBI: help w/return line for stock tank

[mt Al]

There's most likely going to be a TBI in my '72's future. This one in particular:
http://www.affordable-fuel-injection.com/chevy-tbi.htm

TPI would be cool, but I don't have the time to piece one together nor the $ for one fully assembled. The one above looks like a good price for a bolt on system.

I've got the stock tank behind the seat, no plans on doing a suburban/blazer tank swap (want to keep things simple). Any ideas on how/where to put the return fuel line in, what parts are needed?

Thanks very much.

[gmc67swb]

There should be a dimple in your sending unit. I drilled mine and brazed a 5/16 brake line in and ran the return line through the floor next to the factory supply line. worked fine for me.