[LMH]

I believe original comp seats used by SA teams were fiberglass. That said, Steve Sunshine’s alloy seat is very nice and well made. (I have one) Might call or email him to see if any are available.
Somewhere, I have photos of a long range tank. I’ll see if I can dig up a couple. Also, the tank currently in CSX2142 is a long range tank, so you might search around the internet for photos of it. Would give you some ideas to go on.
Larry