Hi Richard,
GTM fabric and cockpit fittings are just the best---but you must follow the instructions and need plenty of Dope
I know of no templates but you should be able to get there by beating litho plates over a bag of sand to begin with---the stuff does work harden though.
Proctor are without doubt the finest----you may even get the metal from them--at a price.
Williams wheels are O.K. but proctor are unbeatable---but I'm not sure if they sell them seperate.
Try to find out if you want perfection in wheels---real perfection! If no luck get back to me and we can perhaps sort the wheel issue between us.
Williams guns are the best---but can suffer from vibration longish term.
sorry to drone on,
Dave. edit--for what it's worth my experiences with arizona models have not been brilliant.