One thing I had not thought much of was the throttle body propensity to got WOT if a return spring breaks. Had that happen in the GTO once and before I could get the key switched off I was at about 130 mph. when I switched the key off, the steering wheel locked, fortunately straight line. When I switched it back on, WOT again. I finally got it straight enough to shut it off in lockdown mode long enough that when I switched the key to on the motor didn't refire and got it stopped. Someone pointed out only one return spring on my Sniper TB. I added a dual throttle return spring setup today.