hey, im trying to get some rear window louvers for my car. BUT! ive called j.c.whitney,npd, and they use 3m double sided tape to connect them to the car .im not gonna spend 200 dollars on something that someone could just swipe, but i dont want to drill into the car. the 280 datsun we used to have had louvers on tracks, so there was no drilling and no 3m tape. does anyone have any suggestions? i was considering making them, i could probably make the tracks with some thought, but i would rather buy them and slap them on the car.thanks