Speaking of "gas":
WHEN YOU FILL THE TANK...make sure you insert the gas nozzle g-e-n-t-l-y. It's a long story, but, bottom line: There's an O-ring seal in the filler tube that you DO NOT want to cut, scratch, scrape, rip or tear. 'Screws up the vacuum seal on the fuel system which results in intermittent engine stalling. (An ounce of 'heads up' prevents a buncha cure...)
Oh, and also along that line: Make sure you are in fact in FIRST gear - not 3rd - whenever starting from a dead stop. Too many 3rd gear starts and it'll be clutch time.
I assume Shelby has clued you in on things like this, but, just in case...
:cheers
(Edit: ...and open the door a full 90 degrees before getting in or out!!!!!! Otherwise the 'roof portion' attached to the door will say 'hello' to your head! Warn your passengers too! :lol