Convertible top install

Convertible top install, Has anyone bought one of the tops from convertible top guys and installed it them selfs?
I did it last year on my 65 Valiant. It worked out not bad but I did not have the old top. If you can use the old one to match up it would be easier. I have looked at some cars at car shows and they are no better than mine is some cases. If you take your time and follow the instructions you should be O.K.