Advice for my 63

[GSTruck]

Getting started on my 63 SWB fleetside. Plans are to install a 94 LT1 FI motor. Has anyone used a fuel injected motor utilizing the behind the seat gas tank? Will have to plumb a return line and don't want to create the gassy smell in the cab.

Also, will be insatlling a later model caprice rear end and will have to weld mounting brackets from OE type. Are the brackets available or will I have to cut the ones from the OE rear and weld them to the new one?

Thanks
for your help in advance.