This coversion has been discussed in the 22T and the 22SCT threads, you should have gone there first before starting this thread - but to answer you quickly:
The 22T & 22SCT share a number of key parts: the same shocks, shock towers, front & rear A arms and driveshafts, but the cost to add the f/r SCT bumpers, tires, front axles, wheels spacers, body, body mounts, nerf bars and the longer chassis puts you into the $200 ballpark - is it worth it? That's up to you.