Judging by the looks & specs of each kit, I don't think you'll have an issue, since the leveling kit is just spacers on the strut towers, you should be able to add the lift kit without any issues. Just be aware that your front end may sit slightly higher than the rear after installing the lift since you have a leveling kit already.
With the truck being 2wd you really dont have to worry about a diff drop so the only other thing to worry about putting the RL on with the RCX 5" would be the UCA's sitting on the bump stops. If the RCX comes with new UCA's I dont see why you cant do it.
What size tires are you looking to run with that setup?? 35's??
I was told by my buddy at the dealership you can run a leveling kit with a lift but don't be amazed if stuff start's messing up after a short period of time because it's gonna ride rough in the front and also said is will have bad angles also i was thinking about doing it when i got my rough country 7.5 inch kit but i didn't want the front end going bad but if that's what you would want go ahead but idk why you didn't just get the 7.5 inch kit for the same price lol??
The RC kit uses a strut spacer already. So you most definately cannot use a spacer that would mount on top of the strut. You can however add a small one to the bottom. I wouldn't go over 1.5-2" with a leveling kit. Also keep in mind that having a 2wd, you still have to contend with upper/lower BJ's and TRE angles.
I would just go with a FabtechMotorsport 6" lift for your truck. The basic kit has standard shocks and the performance kit has there dirt logic shocks. There kit is more money but the quality is MUCH BETTER than the RoughCountry kit.
I haven't had any problem's outta this lift and all the part's looked to be made really well and good quality. Other than me not torque my u bolt's and bed shakes some not bad only just at 40-45mph but will be getting all my lift retorqued this coming week. The only thing i can say about the kit is the shocks, mine are just too stiff in the back and front will be upgrading to bilstein's or Fox Shock's all the way around sometime next year. I also will be buying traction bar's soon if they u bolt's and kit still makes bed shake then that will take care of my problem. I would have bought the Fabtech kit but the price of this one you couldn't beat it and my buddy at the dealership said this RCX kit was really easy to put on since they have upgraded there kit in the last few years!
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