Shaping up pretty well. I'm planning something similar but mine will have the five-hole disc wheels from an ALF pumper and no sleeper. I always wondered why AMT never issued the C-Cab kit with the race car hauler body, it seemed like many more factory race teams used the C-Series than the L-Series.
I'll second Scenes Unlimited. I'm not sure if the Krawlers will fit the kit wheels (and with winter coming it's worth noting that Krawlers suck in the snow anyway ), but I thought I remembered reading that they fit, though a bit tightly.