what do you mean by front end problems? are spacers bad for u-joints or something? i have a d44 front. the problem is the wheels and tires i bought for cheap have like no backspcing and in the rear, the tire is practically touching the leaf spring, it is like an inch away. i would like to space it out quite a bit. i haven't even put the tires on the front end yet cause i am still mounting the front axle. but, i know that i am going to need a spacer because i put leafs up front and that minimizes room for the knuckle to turn inwards. my uncle had to extend the stops on his knuckles (yj wrangler) cause his swampers are so friggin fat. it turns okay, i just don't like doing three point turns all the time on the trail, and i like to have all the turning power i can when i am doing something extreme. what do you think is the safest distance to space out the front axle. i don't think it really matters how much i space out the rear, it shouldn't have problems. besides that, the front axle is usually wider anyway so i can probably space the rear 3" and the front like 2".
you know more about it than i do, let me know what you think,
nate