How rough do you guys think it'd be to design and make a custom soft top close to what besttop or kayline offers for the '73 to '75 guys. Cant do a fastback cause of the cage. What material would you use? Sunbrella? I want to do this on the cheap, but I will need a top when i get to illinois, and it has to be custom with all the body mods. Thanks for any help. And time is going to be easy to come by for once!