The second and third seats are the same size. Same seat as the Blazer back seat also. If you need actual dimensions I'd have to go measure my burb seats.
I am not sure what you are asking as far as your brackets question . I'll tell you that the middle bench has longer front brackets(legs) than the back seat does.
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1971 C-10 Suburban
1972 C-10 Suburban
1969 XL Galaxie Fastback
1968 Galaxie 500 Fastback
1974 SCOUT II
Montrose, Minnesota
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1971 C-10 Suburban (Ochre)
1971 K-10 Suburban (Ochre)
1972 C-10 Suburban (Ochre)
1972 K-20 Suburban (Yellow- that just aint right!)
Springfield, Minnesota 56087
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