i got in contact with the owner of sierra scale a while back. he told me he hasnt been selling them because his injection machine was broken so he had the problem of making the detail parts. to me i am not interested in the white metal and low pressure injection detail parts, i just wanted the vac sheets. i then scratch build interiors or use spare seats,guns,engines and wheels. you can contact him and he has some kits he can sell but i have been buying just the vac sheets for $21.99 plus shipping. let me know if you want i can get you in contact with him. he says when he retires in a few years he will be releasing some new kits as well as upgrading his detail parts capability. i told him go with resin, and offered to cast bits for him but we havent started on anything.