you can buy them from classic industries, someone is making them again.

Last NOS in box set (nice ones) on epay went for close to $400, but that was two, maybe three years ago. I'm still looking for a unused clear one to make a pair, but haven't seen a single pop up on there since I started looking about 5 years ago. One other thing, Mr Gasket made them in clear and also in a slightly smoked color, if that means anything to anyone.

I have a set NOS in the box. I got a good deal on them but wouldn't let them go for less than $400 if someone wanted them.

They usually sell for about $300ish

I ran them on my Vega panel back in the day.Don't get a header leak!They will be toast.

There is no overpaying. YOU pay what you think there worth. Me I would pay his price in a heartbeat and I don't even have a SB. There cool and you don't see them around much anymore. I would like a set for BBC if anyone sees any.

There is a set on my local Detroit facebook marketplace

They've been making them for years.
http://www.clearvueconcepts.com/#Products

I've always wondered if they would get cloudy or if they would get a film of dried oil on them after a while so that you couldn't see through them.

Thanks for the input guys. I think I will negotiate with him and pull the trigger. Will look neat in our showcases.