I have been runing now for a little over 4 months with an E uint (tractor trailer) and after talking with some D uints (straight trucks) I was wondering if maybe going with a D unit it would be more profitable. Just wondering if there are any other E uints that feel the same way about down sizing in your truck. If so can you recommend a place to stretch a tractor to a straight truck and where would I be able to find a reasonable box?