i see 2 sets of buckets and looks like a back.sellings off seats would pay for most of it based on prices of these parts lol.. i seen a 70-72 blazer on one of the sites with 3 row tahoe seat in back like this:
and it looked pretty good fit mind you there is fab work for mounts. but these seats are cheap here. i got these 3rd row seats for my 56 chev 3100 for $100:
made bases:
