Help me make a decision.

[Moody Blues]

I would like to rebuild the whole fuel system due to it's age. One tank has a hole in it, the other tank is not in the best of shape. I figure if I am already doing the tanks mite as well do pumps, selector valve, and lines/hoses as well.

Also I would like to replace the rusty rear drum brakes with a disc brake system. The disc brake system I looked at was only $100 than to rebuild the the drum brake system.

The Catch: My 5-10 year plane for this truck is a complete frame off resto, box the frame, dana 60 front axle in the rear for rear steering (my goal is "The Ultimate Work Truck", but still a daily driver). which will have disc brakes already. I only have so much money to work with. Help me make up my mind.