QUOTE(Mikey914 @ Sep 19 2016, 11:21 PM)
The bumpers in question are NOS, the materials are porous. You can see the bubbles under the surface. The more modern materials are higher pressure and skin better.
Also all new parts are made with stainless so they will not rust. A magnet will tell you for sure.
However we will be coming out with 2nd gen tooling shortly and they will become more indistinguishable on the back side too.
And I certainly wouldn't recco anyone paying $800 apiece for NOS ones now, unless you're just crazy bonkers over CW originality, with the repros being so much better made than the OE's 1970's materials! .... particularly for a 914 which will be driven, &/or even if one might find itself on a rainy Concours ground, as just happened last weekend in Seattle area IIRC!
If you're showing in PCA Concours, I don't think anyone will get dinged in any of the US/Can Zones for a non-original bumper top pad by using any of the repros, & definitely won't in Zone 8.
If somebody were tied score with another 914 at PCA Parade - & the other person challenged on the bumper top - then according to the Parade rules only, the judges could ask you to pull the bumper tops for part nos. on both cars, & you might lose out to the other car if theirs were both OEMs. That apparently doesn't happen often, according to other Parade judges & competitors whom I know.
914 Rubber's repro's go for $350 front & $325 rear ($299 on sale now) -
INCLUDING shipping:
http://shop.914rubber.com/914-Early-pre-75...nal-914EFBT.htmhttp://shop.914rubber.com/914-Rear-bumper-top-914RBT.htmIMHO - & it's JMHO - a NOS set or single top pad would be worth pretty much what a quality new repro goes for, plus perhaps 20-25% ....
maybe .... but NOT double the $350 or so. Might somebody pay double? .... certainly!
And the bottom will fall out if/when Porsche Classic starts producing them again, as has happened as soon as they released the 901 gear shift knobs a few years back. NOS went from $300-500 silliness, to a new Porsche one for $175 (less with the PCA or other discount).
As for Rob paying $400 each 10 years ago - maybe that was all in with tax/shipping, but my $375 was for a rear one in 2010 with a 20% discount + tax/shipping - & if you can get a part with the discount, then that's the best available price on a commodity/part.
Sunset Porsche or Sunrise Porsche should be able to give the OP the current best discounted price right now, assuming the rear ones are still available - no guesstimates or math required for that one.