Repro direct connection trunk lid spoiler- any ideas on mounting without drilling?

Point taken but if one doesn't know how to weld at all, it might look a bit more daunting. I may go this route eventually. If this was an original/new condition spoiler, I would be much more inclined to mount it as intended. This fiberglass repro is fine but it's far from perfect. Between my two jobs, I invested absolutely as much time as I'm willing to spend sanding, priming, sanding, etc. I hit it with the same Blitz Black that I used on my hood and it will look great from 20 feet but still maybe not quite good enough to permanently alter the sheet metal of the car if I decide that it's not good enough.

While nothing about my car is especially rare or "collectible," After 26 years (a few years more than half my life at this point), I have an irrational loyalty that compels me to do the least invasive mods possible while still improving the car. I will cut/drill/etc. but only after exhausting every "non-surgical" possibility first.

Hey sounds good to me! Just throwing out options. My point about showing the stock mounting was more about showing what DC thought was adequate, if plastic push rivets will do the job I wouldn’t give a second thought to using 3M body tape as long as you can get a decent amount of surface area.

My car is so far past returning to stock I don’t worry about changing stuff too much anymore. I mean, I don’t chop stuff up just to do it, but if someone wants to return my Duster to a stock ‘74 /6 auto car then welding up some body panel holes is gonna be real small potatoes.