Page #31, 2009 SCTA rule book PP 3.I fuel systems. Should answer your questions.
It answers most of my question. Thanks Glen. That was one of the first places I looked. It tells me to mount it solidly and if I run lines through the drivers compartment to be sure the lines are safe. If the lines are near the blower drive (don't have one in my application) or near the clutch area, to protect them. etc., etc,. It really doesn't say where I can or cannot mount the gas tank. Therefore I guess I can pretty much mount it anywhere as long as I follow guidance in the rule book.
Mounting the tank close to the engine (just like in the donor bike) saves a lot of aggravation and costs. This allows me to use the original 'in-tank' CBR600RR fuel pump and keep all the fuel system components and EFI from the CBR600RR to include the original high pressure lines. This photo shows a test fit of the engine and the stock (from the donor bike) gas tank.
If time and budget permit I'll get a smaller tank and will mount it in the same location.
Probably something like this one that Jason McVicar ran a few years ago on a Honda CBR600RR in the 650 class.
Now with tank location set I can now start to cut the steel for engine/differential and tank mounts, the chain guard plus start to fab a hood scoop.
Although I'd rather be at Maxton this weekend.