I would like to start off by thanking Jon B at Parts Rack for sending my 2 year old nephew who is obsessed with my Viper a few nice Viper toys. He was also able to put me in touch with Biff at Vipermania to make me these awesome windows for my Gen1. I have been using Northwind Engineering windows on my car for a while, but thought it was time for a little change and update in looks. The entire experience with these guys was great. Gen 1 owners these windows are a must have. They work great with both the roof on and off. Biff went out of his way to make sure these windows would work well with my CF Northwind hardtop and that I was a happy customer. Biff also informed me the he only has a few more sets to sell before he stops making them. I though I would share this with all of you before they cannot be purchased. I bought mine of course through Jon B, but i'm sure they can also be bought through Biff at Vipermania. By the way, I was able to buy these without a hassle from the wife because I told her how well they would work on the car with the top off... :****:She is also very happy because the windows do cut down on the air flow in the car and does not mess up her hair as much. Check out the photos below and let me know what you think.