Not sure Wrangler Power Products
have one to fit a 3.0 but this site has some HD stuff for Search and Rescue Vehicles.
Call them and ask about a larger output.
I wanted an HD Relay (12V/250A) to control my winch output and they hooked me up with a continuous duty relay, never would have found it otherwise. They are pricey but quality cost money.
Wrangler Power Products - Web
I also have an HD Set of Jumper Cables, with one changeable end.
I have standard a jumper clamp and a plug in ends, and they are made from “0” gauge welding type cable except heavier sheathing.
They do really nice work and my next alternator will be from them.
4x4, 5sp, Std Cab, Stepside, E4 Red
4” Lift - Coil-Overs, 6” SkyJacker Leafs - No Blocks (Mistake)
31 Spline FX4 Rear Axle, 4.56s and OX Locker, Hurst Shifter w/Optional Stick and "Made by Grev" alignment adapter