Hey niro... I put a lot of hpi blitz parts on the front, so now I can use any wheel with a 12mm hex. the knuckles are almost a bolt on. it was a long time ago, but i think you just have to shim the outer hinge pin to remove any slop. I break a lot of rear drive axles. the FIRST thing you should do in get rid of the plastic diffs. Its a fun truck, just hard to keep the front wheels on the ground!
ORIGINAL: Dads like rc too
I know this is crazy, I should probably just look at some pics on the Redcat site before thinking out loud, but do you think it's possible to modify the front lower plate assembly from a Caldera to the twister. Maybe you could just cuttoff the front chassis of the twister and modify it to accept the front lower chassis from the Caldera. I know you would still need the front diff in place to bolt the control arms to, but you could leave the case empty if you wanted to also leaving the front dogbones and front center bone out for weight reduction.