I wouldn't recommend the fiberglass ones. They are too hard. If you ever get hit with one on, it will likely put a mean crease in your quarter panel. ABS plastic ones are a decent substitute and I've had no trouble using them in the past with a little adjusting.
None of the aftermarket ones I've come across so far are a direct replacement for OEM ones. I'm sure with all the technology available today it's only a matter of time till some decent replacements arrive on the scene. Quite surprised with the prices that NOS ones are selling for it hasn't motivated someone to come up with decent repops. There's obviously a large demand that will only increase over time as these cars age.
Fairly easy to tell the difference between aftermarket and OEM. 2 Holes and the stiffness
If it's a driver quality car I'd do the ABS ones. If it's a really nice low mile well kept original I'd search for some NOS ones. HTH
Well considering I was doing about 60 mph backwards when my 86 GN tagged a bridge there was nothing left of the filler. Quarter panel damage was nothing & trim broken on the out side tail light lens. Rear bumper was steel with an aluminum support. It folded & is what caused the damage. Not a firm filler.
I have had other events where guys cracked a Fiber glass filler & been repaired. Not easy to do with plastic. We will continue to sell Danko's when ours are done. Some people will not need a show quality set of fillers. The fiberglass units we are working on will be show quality & fit.
We will still carry the ABS units as well. If they made the fillers in Aluminum we would carry them to give people choices.
Ours will be twice as thick as the danko units. Miguel is fitting these to a hi dollar show car. But does a guy with a low 10 second car who cares about weight want a thicker Fiber glass filler? Probably not.
I said this before & I'll say it again so when people pull up searches they will see this.
ABS is hit & miss. They seem to have sharper lines. When they do line up correctly they work & look great.
Danko's are made off of a factory filler but do need work to be 100%. Some times they get released early & have twists in them. The rear units leave the tail lights with gaps. This can be fixed but are time consuming which costs your body man time which costs you $.
When ours get done we are hoping to have the closest appearing filler to factory as possible.
We are not rushing this & plan on presenting a quality control that can fit on every car & look factory when installed. Do I have an exact date no I do not. But when we do I will be the first to post.