When we went to AZ we also stopped by another G-Body wagon guy's place and picked up his old frame. He's doing an independent rear suspension full build with a different frame on his Malibu wagon and setting it up for the Silver State Classic. I read a while ago that back in the day drag racers liked the Vega wagons because they were more stable at speed, so maybe there's something to that.
Here are some pics of the old frame. It's been clearanced for rear brake calipers, dual exhaust and has a thrown together trailer hitch. I will be starting the frame notch and boxing it after work today and then building a better hitch. At that point I'll get on to some bracing. Over all it's in decent shape, no real bad rot or anything. More soon...
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-Ben, Your friendly neighborhood Rendering dude, PM me for info!