C3 seat backs with shoulder belt pass through

Help:  I'm installing new seat foam, new leather seat covers, and correct seat belts in my '70 coupe.  Problem is, the seat frames I have are from a ’74, so the backs don't have shoulder belts pass-through openings.  I can cut out the openings in the frames but I need the guide brackets that are spot welded around those openings in '70-'73 seat frames (circled in red in the photo).  I’m looking for an old or damaged seat back frame(s) with that bracket that I can remove and use as a pattern to fabricate sheet metal replacements.  Alternatively, does anyone know of a Corvette parts vendor that sells those guide brackets?  Thanks!

I installed ‘79 seats in my ‘72. I used makeshift guides originally but have now purchased nice chrome guides used for ‘69s. They screw into the top of the seat back and it looks like they will work on the ‘79 seats. They may solve your problem.

Care to share where you purchased the parts from?

Norsky: I got them from ZIP Products in Virginia (www.zip-corvette.com).

Thanks for your reply.  FYI... After searching for quite a while, I was finally able to procure the top halves of two old seat frames, drill out the spot welds, remove the guides, and weld them into position on my frames.  It worked out just fine.  See the accompanying photos.

https://www.VetteRegistry.net/member_uploads/16001_16100/16017/IMG_710720247283353r.jpg

https://www.VetteRegistry.net/member_uploads/16001_16100/16017/IMG_711720247283620r.jpg

https://www.VetteRegistry.net/member_uploads/16001_16100/16017/IMG_461720247284239r.jpg