Really? The bulks come off a revo easily, remove the pins that hole the driveshafts to the diff and just slide it out. No need to remove the arms just the shocks.
Arms come off easily, just pull the shock towers and skid plates. I find the revo easy to work on. I will say that getting a diff out of an lst is easier. If you want an all day job, rebuild both diffs in a non X model savage. That is almost a full disassemble job to get them out...
Maxx trucks are super easy to work on. 8-10 screws removes both ends from the chassis, and only a few more screws to get a bulk off and the diff out.
I may be jaded though, and I use the following tools:
http://www3.towerhobbies.com/cgi-bin...?&I=LXNXM3&P=7
http://www.skilshop.com/v3/products/...=%7Bkeyword%7D