Some Questions for a new '72 Cheyenne Owner

[SpeedsterZ28]

Hey Guys!

I'm a new member.

Just got a 1972 Chevy Cheyenne with a SB 400 to keep some miles off the Z28(not an economical decision, I know! ), but there are a couple questions I had on the vehicle:

1. The fuel gauge is not working...any sites with good info on how to change it and add a new one?

2. My Dash lights are not working...where would the fuses be on the truck to change them? Any good sources of info on wiring and electrical for the truck?

3. My buddy has offered to give me some single-chamber flowmasters he had for his 89 5.0 Mustang....this is a dumb question, but could I put them on my truck?

4. What's an overall good place to get a lot of service information and repair guides? This is the first carbuerated motor I've ever had and I'd like to be able to have a good source to reference.

Thanks again for any help!