If your going to 40's in the future, you might as well spend the money on axles once. Just save up for one tons because the toy axle will keep breaking. I have less than $3k into my d60 and 14b, with new gears, bearings, seals, HAD flanges, chromo 35 spline outers, stock no neck down inners, detroit front, spool rear, rear disks, new front brakes, drive flanges, and ruff stuff diff covers. I also got my axles for free from a parts truck, actually I made $50 so far off of the truck. The only thing I may have to upgrade in the future is the inner shafts, but I'll cross that bridge when I break one. Also, I will be on 42's on my 4runner.