Ez-lip is similar to the rubber weatherstrip that fits on the bottom of a garage door. I bought one for my 88 wide body project. It is a black foam material that forms to the radius areas of the front corners of the Fiero nose/bumper section while running the entire perimeter of the nose/bumper .. Can be found on EBay. I think the tape will work, but a few fender washers screwed from below, installed at strategic locations, might give you some peace of mind. It actually adds some protection against scuffs and dings to the leading edge of a front nose while making the car look lower from the front .
Use very good cleaner to remove All wax oil etc where the tape will live.
If you fail to clean then expect to loose whatever. Carb cleaners and others leave crap behind and if tape stick, won't stick long term. If comes off while driving, is big enough to get in tires, hooked on exhaust, etc. If it sticks good one place and not the other then could damage the car.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
I took a couple quick photos of how I will be installing on my wide body nose. These are bench photos showing the profile of the lip material and a couple different screw options you might use.
Here is a profile of the lip material, the red being the 3M mounting tape. I just picked out a couple different screws/bolts you might use. Ended up showing the sheetmetal screw/washer with a speed nut.
This photo shows the washered screw going through the 3M area, then through a piece of plastic(the nose of the car) and then into a speed nut on the inside. if there is no room for the speed nut, you likely could use a self drilling screw/washer and just run it up through the nose, but don't over drive it. Tighten the screw to just contact the lip, dont deform the lip. Put a screw at each end of the lip, one at the start of each front curve and one in the center of each curve. Add one or two additional on the long runs. Don't overtighten, they are just there for security to mechanically fasten the lip. Anyway, that is how mine will be installed. Good luck, EZ LIP doesn't have much for instructions on my purchase.