I bought a Castle Creations Sidewinder 8th system last year and never used it much. I ran into a situation where i burnt up my mamba max pro and i need a esc quick. Can I use my 8th esc on a CC 1410 3800kv. I know i will need some 6.5mm bullets but im worried running the 8th esc at 2s with minimal load.

Slash 2wd

There is no problems with running that setup. If you are planning to get a new controller to replace the MMP I would get the proper male and female bullets and make some 1" adapters so you don't have to resolder the motor wires when you get a new controller.