A 1954 Suburban is 2¼". I found it at a parts store. It was a remnant and I had to buy the whole 8" of it. You might call around to local flaps and have them check for a remnant.

"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.