I’ve been working a P14 sporterized project myself over the last couple of months. Luckily my metal was all in great shape. The small parts are readily available on EBay and through various companies. The stocks are out there but not cheap $350+/- . I picked up a repaired DP stock for super cheap and collected the rest of the parts (upper/lower wood, barrel bands, bayonet lugs etc). I have under $175 in total (got the rifle for free). It’s no show piece but it’s period correct complete with battle scars and it’s been a fun chase. I’m no expert on these guns but I’m happy to share anything I’ve learned