Thanks Guys, I appreciate it
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Not too much to report, but I've been steadily working at getting the rear bench seat mounted. It's out of a pickup truck and has been trampled on by various dogs and kids (shop helpers sometimes) over the years. It's just a little dirty now, but all three seats will be recovered in grey leather at some point.
I popped the sliding track off the bottom of the bench seat as there's no need for it to slide and I'm fabbing up a different frame and straight posts on the underside to tie into the two rearmost stock mounting holes on the floor.
Sorry for the crappy pics: