Craig sent you down the right road, Chad. I've used electric line locks before, and they work fine. On my last buggy I got a high-pressure ball valve from Evco (I think), with 18" NPT fittings, which I got adapters to the brake line fittings. It worked great and never leaked. It was mounted directly to the left of the steering wheel. Assuming you have it plumbed into your rear brakes, you can press down on the pedal and turn the valve, then release the pedal to have the rear brakes locked, and the front free. You can also keep your foot off the brake pedal, turn the valve, then step on the pedal and you will have the front brakes locked, and the rear free. Way cheaper and easier than cutting brakes, and I liked the way it worked on my buggy better than the buggies I've driven with cutting brakes. Plus it got me past the parking brake requirement.
I'd also like to know if this would satisfy the parking brake requirement for state safety inspection parking brake. If so, that's what I'm going to use on the XJ.