Okay im pretty sure AutoZone carries GC, ill check there.
Another thing that has me confused, this generator says it can output 3750 watts, but it has a 20 amp main breaker. If my electrical knowledge serves me right, 20 x 120 = 2400 watts. That's nowhere near 3750.. The generator is rated 3750 continuous and 4000 surge. How is this possible with such a small breaker?