The only company that offers an 8" susp lift kit is Skyjacker, but I wouldn't go more than 6" with the TTB set-up. What size tires are you wanting to run? you can fit up to 38's with the 6" kit + 3" body lift. But I personally don't like body lifts for safety reasons, and 38" tires will put alot of added stress on the TTB parts. 38's are even tough on the Dana44 straight axle in my 78 Bronco. That's why I've gone to a Dana 60 SAS in the 84 Bronco, running 36" tires. JSM84