What do I need to run 37'' tires comfortable and efficiently on a 2 door 2010 JK Sport with D44 rear and D30 Front?
I'm currently running 35's with a 3.5 SJ Lift. I'm upgrading my lift to ether a RK or Clayton, still on the fence to which one.
1. What size lift should I run that will fit the tire size and still give me flex on the trail?
You're probably gonna want at least the 3.5" your on. Chances are the RK (or even Clayton) lift is gonna give you more lift than the CrapJacker.
2. Drive Shafts? Front? Rear? or Both?
Are they both stock now? I'm sure you're gonna want a rear after you get a decent amount of lift on it. Maybe front, too...
3. Trimming? Cutting?
You can skip alot of the cutting if you go with some good flat fenders or you can cut your stock fenders and some body...
4. What do I absolutely need for strengthening to handle the heavier tires?
You could probably sleeve & gusset the 30 to handle them, but I'd recommend a 44 up there for peace of mind. If you're sure you're not going above 37, then get a PR44 or TeraFlex 44.
5. I currently have stock 3.73 R&P but already purchased 5.13's for the rear so that's the route I'm going.
5.13's should be alright for the 37's, but with an auto you're gonna wish you'd have gotten 5.38's.
6. Planning on axle gussets
I'm not trying to brake the bank of course so I'm looking for answers that will get me "safely" running 37's but it doesn't have to be bomb proof.
"Safe" as in not gonna break driving down the road and "safe" as in not gonna break on the trail are two different animals. Good luck with not breaking a 30 on the trail with 37's. Not saying it can't be done, but I'd say you're likely to break something sooner rather than later.