'78 C10 Seatbelt Questions

[TugOwar]

Hello Gentlemen and Ladies. Hoping this post finds you all safe, happy and well loved.

On to the point: My son has a 1978 C10 4x4. He bought a very nice pair of custom made sheet metal 6x9 speaker mounting plates that fit perfectly into the openings at the cab corners behind the seat.

But there is a problem: The retractors for the shoulder strap seat belt mount in the top of this same opening. You can see how this complicates plans...

So we're looking at options for seat belt retractor mounting.

Using the ever helpful search feature here on the forums I found this thread
Hello Gentlemen and Ladies. Hoping this post finds you all safe, happy and well loved.

On to the point: My son has a 1978 C10 4x4. He bought a very nice pair of custom made sheet metal 6x9 speaker mounting plates that fit perfectly into the openings at the cab corners behind the seat.

But there is a problem: The retractors for the shoulder strap seat belt mount in the top of this same opening. You can see how this complicates plans...

So we're looking at options for seat belt retractor mounting.

Using the ever helpful search feature here on the forums I found http://67-72chevytrucks.com/vboard/s...d.php?t=361852
which seems to indicate that rear seat belts from a 87-94 S10 blazer would be a suitable replacement.

Did I read that correctly?
If so, do the S10 belts have a single mounting point? Thgis would be ideal I think.

Thanks so much for reading and replying and for sharing your knowledge and experience with those of us less learned.

May your healthcare remain healthy and your firearms un-infringed.