Have done two Tri Wings (02 Venture & 84 Venture for wife) with no problems. The nice thing about this kit is that you can be inventive and do it your own way. For instance, the trunk insert is now part of the body. Keeps out dust and rain now. Building a 99 Venture for my buddy right now. Would build another for myself (If they bring out the 1700cc Venture).
When I got my Tri-Wing kit for the Venture 4 years ago, one of the first things I did was fiberglass in the trunk assembly. It's much nicer that way. You do need to vent them or they'll build up condensation. I just used a house soffit vent glued in at the top of the back wall. Works great.