I just got back from my local install shop and told them I would be using the Stinger HPM 4g wiring kit to hook up my 300/4 and 500/1. I honestly heard crickets followed by ,'shit man, is it returnable' . will this be bad if my battery is in the trunk right next to the setup,? am I going to have to step up to a different gauge?

What kit or products would be best for these two amps. It sucks because, I'm already halfway through installing my Stinger kit so no returns. And on top of that the cap that came with the kit has posts that seem to only accept 4 gauge. the installation kit from stinger that im using is the Stinger SWCHK4 with cap.

damn