Bucket Seat Frames

['68OrangeSunshine]

'71 GMC Jimmy K/1500. Custom trim level.
My seats are shot. I bought this rig in 1995 and they weren't great then. A PO had installed some junkyard highback buckets out of an '80s Camaro/Firebird with a great flare for redneck engineering. Single 4'' posts are bolted to the floor to receive the front brackets. The rears of both seats are screwed into 14'' long 4x4'' wood blocks, in turn screwed to the floor. In a head-on collision, I'm a goner.
The pony car seats were done with a wire spring frame encapsulated inside the seat foam. Not a repairable configuration.
Now, big spring ends stick up to poke me and my passenger in the butt.

I need new bucket seats.
The vintage console is fine.

I was looking online at Shop4Seats.com and liked their products. When I called and asked for an ''expert'' to advise me about mounting brackets for seats, a girl told me she was it, and didn't understand what a GMC Jimmy was. She said they had brackets for Silverados. I explained that was a later trade name for a trim level. We were unable to come to an accomodation.

I'm not looking for period-correct, concourse-grade bucket seats here, I'm just tired of getting poked in the butt. New seats are fine if I can mount them securely.
Anybody know of a solution to this problem?