Hi Ray,
Welcome to the board! There is a wealth of knowledge here for the taking!
Also, I'm not trying to be a jerk or anything, but I agree with the others. If the frame wasn't cut down, it's got to be a blazer frame. If I shortend my step-side bed, I'd have 10 inches of "gap" between the cab and the bed so the fenders would be over the wheels and there isn't any room to move the fenders back either.
I guess a fast way to tell is if someone would post the wheel base of a shortbed and a blazer so you can measure.
However, great looking truck! There is another "super shorty" that is black on here too, I can't find the link however.
I found the link... check it out, your trucks twin!
http://67-72chevytrucks.com/vboard/s...d.php?t=220419