I like the M-G Engineering System, but check the clearance between the intercooler pipe and the brake reservoir. If you have an LBZ, chances are you will need to move the intercooler or it will rub on the brake lines. When you install the M-G Engineering Adapter, it moves the brake reservoir a few inches towards the front of the truck, and it starts to rub. I know someone who loves theirs, and they tow an LB7, plenty of room and no rub issues.
2007 Fleetwood Excursion 40E
2007 Chev Classic CC LB D/A - Toad
2013 Jeep Sahara Unlimited - Backup Toad