Having done both outlaw and sdhq kits I will say:
* The SDHQ one is easier to install, some of the angles created by the outlaw kit are tricky to get to
* The SDHQ kit required less finishing before installing
* The some of the SDHQ kits had quite a lot of surface rust on them when they arrived, a little more oil after cutting would have been great.
* The outlaw kit had some quite large gaps that needed bridging during the welding process
* The outlaw kit is twice as thick as the sdhq kit
* The outlaw kit is only a single piece so a theoretically a little easier to install however due to the tight nature of some the welds they end up taking just as long.
* The outlaw kit had cracks at the top of both gussets from being bent
So after all that the kit I personally prefer to install is the SDHQ one.