The big 3 is nothing more than 4ga amp power wire. All your doing is replacing: 1) Battery negative to chassis 2) Alternator to battery positive 3) Chassis to engine
Agreed, I am not sure what the shop I am using will do but I know they will make it clean. I need a freakin dual battery tray! The place hasnt answered all day, I sent another email.
I've done a couple of trucks and I take the stock ones off to make the new ones the same length. I don't bother putting the old wires back on because the whole reason your going through the trouble is to replace the stock ones...