One thing I noticed on my '54 GMC, the brake lines are held to the frame with clamps. On the '55 1st Chevy they're held with clips. There are lots of other little things like that but I can't think of more right now.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.