I'm going to order my transmission next week, i have a 4wd, which shafts are more likely to break, and is it worth upgrading, i'm most likely going to add dd3's and an hx40type turbo nothing more for a long time, would it be worth upgrading these, not like it matters but i could launch at 35psi with my stock transmission before it took a crap, and it launched crazy, broke loose all 4's sometimes, but is it worth it or no... because i really don't have quite that much money but just wanting your . 02