2. Will I need to remove my spare tire well? Briguy280Z mounted his tank without removing it, but maybe that only works on 280Z's. mas280's pic's looks like it wouldn't fit without removing the spare tire well. On my '73 I had to remove the spare tire well.
3. Any modifications needed to the fuel pump/sensor unit (from what I've read, I will need to rotate it approximately 180 degrees). I can't find the post, but I seem to recall someone posted making modifications a while back. You can rotate the lines to which ever direction you need them. You'll see when you get the tank.
4. Wiring information/diagram. I don't want to buy another FSM just to figure out the wiring for this tank. Simple, one plug for fuel pump, one for sending unit.
5. Fuel Gauge - I already have an Autometer Speedo, so I take it there is an Autometer fuel gauge that would be compatible with the built in GM sender? Yes. Get one that will work with a '01 LS1 TA.
6. What's the best way to connect to my existing lines. I would like to use my existing supply line (appox. 3/8") and the existing vent line (approx. 5/16") as a return line. I'm using these now with my stock tank and ZX fuel pump. Maybe I shouldn't use my existing lines and just replace them with new lines? From what I have recently read, the stock lines are capable of handling up to 500 or 550 horse power. I'm just running new lines.
Since you have a regulator on the fuel rail, you must gut the regulator inside the tank. It's not to hard I think I just used a Dremel tool with a cutoff wheel. Once you pull the unit out of the tank, you'll see how everything works and where everything flows and to what. Make sure you read that Racetronix link I posted (in the link above) to understand how the fill bucket works.
!M!