I haven't seen any other OBS Chevy 4wd long travel kits out there. Heard rumors but never seen another one. Do you have a link to the other site?
My kit is $5500. Its about 4.5" wider per side, gets about 15" of travel with 4wd. The fabricated knuckle uses newer Silverado hubs and brakes which are bigger than the OBS stuff. It uses a newer Silverado outer CV and a 930 inner CV with machined adapters that are included in the kit. The kit also includes a new shock tower with new upper arm mounts as the old mounts have to be cut off. It uses 2.5 x 10 coilovers and bypasses, and provisions are made for a 2.0 bumpstop.
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