I'm in need of the Big 3 Upgrade for my car audio system and was juggling between doing it myself or just having a shop do it. I'm looking for a fair price as I know this job should only really cost around 50-60$. It's just some 0 gauge, terminals, and probably 20 minutes of labor. I'd either have the shop supply the parts or bring my own to the install.

Can anyone recommend a reputable place. The few places I know had never even heard of the "Big 3 Upgrade" and vaguely understood it after I explained which wires get swapped out.

 

How about you buy 2 sets and give one to me as an installation fee? Seriously, I say just do it yourself.