Hey guys. Sorry for the 4 year delay. I haven't signed on here since 2010. Sorry. I will make a parts list for you guys. ASAP. BTW I still use this dolly and it works great. I actually use the extension to rest on my trailer as I push the boat onto the dolly. If you look close you can see that the center PVC pipe is supported by two pieces of aluminum strips. I think I used 1.5" PVC and the rear supports are made from 1x5 pine wrapped with thin outdoor carpet and the forward bow support is 2x4 pine. They are mounted to the PVC on a slight angle using bolts that are recessed into the pine and drilled into the PVC.