Originally Posted by 5window
Just as an update-I got a sheet of 3mm Sintra from a local sign shop and ordered the DAP spray adhesive as Dan suggested. I might as well TRY to do it right the first time. Harbor Freight had $30 spray guns on sale for $10 (plus a free LED flashlight!) and shipped my total order for $6.99. So if it would juts warm up a tiny bit, I'm set to go. Thanks.
Just a head's up. I found an online promo code for yourautotrim.com (scottkeen) and saved 15% on the order. No idea who he is, but the code is listed on several coupon sites and it is still active. Never hurts to look.