I run a 2" diff drop with a 3" lift no issues. The one i have is the same one as jmr's you can get it on ebay for about 200 they are still made. Its not the Supreme version tho I'll post a link after work. The supreme one is the same kit aswell just not made by the same guy

 

Here ya go, this is the kit i run, it's the original jmr kit. The price has dropped 75 bucks since i got it lol. Made in the USA too https://rover.ebay.com/rover/0/0/0?m...2F163331250111

 

 

Not quite factory but runable it'd be equivalent the the factory trx lift i suppose (1") also i have 6"s of lift. 3" body 3" suspension. The diff drop provides no lift it just lowers the front axle