Your best bet is to confirm that the k7000 frame fits, and let people source it themselves. It's a workhorse, with easy to source parts and easy to repair. As @ReplicaX said, the D series was a major failure with WG and truely unreliable.
Just so you know, idgaf if your spinning the tubes yourself. So get off that high horse right now. I've contributed more to this project then you have at this point and I have zero dogs in the fight besides making sure my friends dont get stuck with a cabinet that isn't measured correctly...
I know that I said I wouldn't post again here.
@Gaming.One is being a giant prick. @rewrite has bent over backwards to steer this shit show right numerous times. More so behind the scenes then most here know. Go fuck yourself pal.
The panel surround sticker is out there for free. Download the file and have someone like Szabo or GoG print it. The original is not a polycarb but a gloss vinyl.
The air release vinyl is amazing to work with.