Well, some more mods for me are required. Today I'm out bashing with the picco powered savage and finally blew the rear diff. Raptor r u sure you want to run a trick motor? The savage .21 does need more power in stock form, but jeez this picco can tear up a truck! I have been postponing doing the four spider gear diff upgrade and looks like I can postpone no more. So, off to that Savage store for the goods, maybe santa will bring? So, Raptor, add the four spider diff upgrade to the list of things to consider. There are good write ups out there, I think one is at savage central, for the upgraded diffs. As far as what parts are best, I think budget has some input here. I went with cvd's, just cuz they are a better design, I have the hot bodies, but would try the dynamite ones if I had to do it again. Just upgraded dogbones would probably do fine and leave you with some extra loot for the other upgrades, like the diff I just blew up for example. You also might consider sticking with a stock size tire. I am running big joes and could reasonably assume that the extra traction has not helped with the weak links left in my Savage. I'm shelved till I can get the time to tear it down and order the parts. Current project is painting the home, got to take care of those appreciating assets too. Good luck and spend some time searching the forums, use the search feature here it works great, the guys in this site are awesome and have brought me up to speed real quick. I would personally stick with the plastic parts, cheaper and readily available at the LHS, AND the give some, dont just bend and stay bent. I have yet to upgrade to anything aluminum. I think some like the upgraded shock towers though. I just havent broken anything like that yet.... yet.