Alright, check this out..... protrac for 4wd was recently released right, k. Proline states that to get the length and strength from motor to tires, the best solution is 2wd MIP's for pede and rusty. They are a bit longer than the 4wd mip set. Pave tried the MIP's for p4de last year without any luck, then MIP's released the p2de set for how much? Ya, $75ish on the tag lol at the price but hey, some of us need it. I use 4wd shafts without issue and they last for a month or so before a failure. I tried the Xo1 set of shafts with out any luck earlier this year. Well, if you want another alternative, now you can go Tekno! They sell a set of dog bones for $20 specifically for 4wd protrac sl4sh/p4de. So a set of rear Tekno for p4de or sl4sh for $45-$50 plus a set of protrac bones for $20 and you get a Tekno equipped p2de with oversized bearings. For around $70. The upside is way less rotating mass and you will gain a 6mm axle in the rear.
Downsides may be using Tekno 17mm hex set if you run big wheels, they may be a bit different than other sets from other companies so I don't know how many mm will very from one manufacturer to another resulting in a slight difference front and rear on width. Its Kool, Baldy don't care lol ..j/k. Also, I don't know if the rear carrier will work out with the 2.8s. It should cause I've been running Tekno with 2.8 on a sl4sh all through last year. I'll fit it all up and confirm this week.