If you're only going to 35s, you can do a D30 with gussets and you'll do fine, that's what I have. If you want to beef it up a bit, get a used Rubicon D44 front ($2500 max for new I've seen online) and you'll be fine. If you go for a full aftermarket axle, Dynatrac is best, with ARB locker and all the bells and whistles, you'll land at $5k for an axle up front. Curious why you want 5.13 for just 35s, I have 4.88 on 35s and it is perfect.