When you look at any modern truck frame, they are all boxed (at least all of them that I've seen) and are BEEFY. They make these old frames look like they came off of a little sports car or something. I'm probably going to have a good portion of the back half of the frame on my C20 boxed when it's all said and done, too. Granted, mine won't be as nicely done as what you guys are doing (hats off to you), but it'll be a lot beefier than it was originally. It hardly weighs any more than my Taurus Wagon at this point. Then again, it doesn't have the power windows...

And, actually, at this point, its in a billion pieces, so it's hard to even determine what part to weigh...
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Nick
Old Mustard, 1972 Chevy C20, 350, TH350, 4.10 Dana 60 rear, owned since I was 16 in 1986
http://67-72chevytrucks.com/vboard/s...d.php?t=545356
Blue Bell, 1987 K20, 6.2L Diesel, TH400/NP208, 4.10 gears
Ustahav 1976 K10, 350/350/203, Gov Loc, Yooper beater trail truck.