QA1's are way over rated if you ask me. I ran them for a couple of years with my DJM LCA's and just a couple months ago decided to crank the damping way stiffer to check the ride.... was apparently too much for them to handle, broke the tiny piston on one. Fuck twin tube garbage IMO.
Get Ride tech HQ's, and may as well get the threaded body ones so you have option of coil over if you ever decide to go that route.
Atomic on ptnet also makes some very nice looking adapter brackets for 4wd LCA, but it will limit your eye-to-eye length, therefore limiting travel also.
I'm currently pondering a few winter projects, possibly try some brackets for coilovers up front, then transfer my HQ coilovers to back duty and get some TQ's for the front.