If you find the rear brakes locking up to easy you can install an adjustable P-valve. FROR sell a kit with all the brake line adapters for the brake lines or you can get one from Summit and source the adapters fittings.

FROR P-valve:



Web page:

http://frontrangeoffroadfab.com/nfoscomm/catalog/product_info.php?cPath=27&products_id=57&osCsid=70e3bf63e06a0bb91edd00baf953c47c