If you're talking about the ABS pieces from National Parts Depot, I have a set. Mine's more of a restomod, so as far as the grain pattern "not being correct" goes, I'm not really concerned - once they were painted the right color for my interior (SEM Metallic Black), they look great. A concourse-minded individual will want to seek out some nice OE pieces anyway.
Currently, they are "loosely" tossed into the car (only fastened at the door jambs currently, with the rear seat pretty much "holding" them in-place - fixed... not folding). I was scrambling for a car show, and they wound up fitting in "good enough" to just look nice at the car show without having to nail 'em down.
However - they are going to take a bit of massaging and tweaking to get them in. I'm not saying they don't fit... I'm saying they'll take some work to fit correctly. Like the repop door panels (and other big trim pieces) they don't have any mounting or fastener holes punched through anywhere - you'll need to do that yourself to ensure proper fit... which will be a challenge, since everywhere the fasteners need to go will be an exercise in locating the mounting points behind a big piece of material, and punching the holes [hopefully] in the right places. There are a few things the pieces being of ABS construction are a detriment, specifically where the other trim pieces are supposed to overlap or be overlapped by these pieces - they don't "give-a-little" like the OE pieces would - which makes it tough to fit everything together properly.
A few things I really like: ABS construction... means the shape will not distort with the crazy heat in West Texas. No ashtray is nice as well - yes, it's not stock... but who uses the ashtray in the back seat anyway (one less thing to hassle with).
Overall, I'm happy. But then again, I'm not a concourse guy or afraid of trimming or tweaking a little to make things fit where they otherwise might not, so it is what it is.
Hope this helps. I'll get some pics this weekend - I still need to install my seat belts and tweak a few things inside anyway.