Could you share a picture of both front and rear?
The rear seats are nothing but foam, so I had to weld in the base from the donor car:
Actually started like this . . . my new lawn decorations . . . wonder what the neighbors are thinking . . .
then it got partially cut to get to this stage to work with . . .
And this is my final results . . . welded in place . . .
With the final plan for it looking like this . . .
Being a convertible, had some additional supports that were needed to be added . . .
Added a bunch of support under the car . . . you can see the frame connector to frame connector supports with an added drive shaft loop . . .
( actually I'm connected rocker to rocker - made sure it was all connected for additional support . . .
Then added this in the cab for the bucket seats to be well supported . . .
And it's still in the works . . .