Don't buy the 2WD JK's!
I'd stick to 35's if you get a D30.
Minimal lift, go with 2.5" of lift, that will be fine for 35's.
I'm running 2.5" & flat fenders and have 37's fitted.
The 3.8 is a fine engine, and a little oil burning is normal and expected. The 3.6 is better, I'll admit.
If you get the 3.8 and 35's, for gears: Manual-4.88's. Auto-5.13's.
2008 2-dr Rubicon, auto,
RK 2.5" Max Travel, Fox 2.0 shocks, 37" Nittos, 5.38's, RR skids, Warn VR8000-S.
RIPP Gen 2 Stg 2 Supercharger.
"Don't give up 5 minutes before the miracle occurs."