I have an 06 summit rev 144 and I was wondering it there is anyone making full extension kits these yet. The only reason I bought a 144 is because I wanted to take it on a trip the next day and I didnt want to wait 4 days for them to put the 151 together. Now I know it would probably cost 2,000 to 3,000 to trade it in, so who makes what for howmuch? I would like to go to a 159 now. Thank you in advance.