RE: B4 to T4 conversion, how hard is it?
you defiantly need the front shock tower, front axles, turnbuckles, front a-arms, rear amms, rear driveshafts.
in theory, you could run the shorter chassis, you will sacrifice some stability, but not much. you might be able to squeeze the rear tower under the body, it will be close. all together, you are looking at about 60-70 bucks to convert it over unless you go to ebay for your parts.