Dynatrac will manufacture a custom axle with the brackets fitted for your suspension. You have the option of ordering a high-pinion for the rear axle. Custom lengths are another possibility. If you decide that you want a different gear ratio (the Ultimate Dana 60's only come in 4.88 or 5.38) or traction aid other than the Eaton E-Locker the price difference will quickly evaporate, especially if you pay someone to perform the labor. The front ProRock 60 has the option of lower profile hubs or drive slugs if you're the kind of guy that trashes hubs. If you decided that 5x5.5 bearings are enough for you that is also an option with axles from Dynatrac. Both axles are plenty strong and have their place, it just depends upon your needs.