BUICK | Model Year | Closest distance between forward towers - (M1) | Distance from uppermost windshield to forwardmost tower foot - (M2) | Closest distance between rear towers - (M3) | Crossbar spread distance center to center - (M4) |
Century - 2 Door | 82 - 94 | Q31 - 39 3/4" | 4" | Q31 - 39 1/8" | 22" |
Century - 2 Door w/ Stretch Kit | 82 - 94 | Q31 - 39 3/4" | 4" | Q31 - 39 1/8" | 36" |
Century - 4 Door | 82 - 96 | Q30 - 41 1/4" | 5" | Q30 - 40 3/8" | 36" |
Century - Wagon | 82 - 93 | Q31 - 39 5/8" | 5" | Q31 - 39 3/8" | 36" |
Century Wagon max Crossbar Spread | 82 - 93 | Q31 - 39 5/8" | 5" | Q31 - 39" | 70" |
Electra / Park Ave. - Sedan | 85 - 90 | Q31 - 44" | 4" | Q32 - 43 3/4" | 36" |
Electra / Park Ave. - Sedan max Crossbar Spread | 85 - 90 | Q31 - 44" | 4" | Q32 - 44 3/8" | 44" |
Le Sabre - 2 Door | 86 - 89 | Q24 - 43 1/2" | 3" | Q24 - 44" | 36" |
Le Sabre - 4 Door | 86 - 89 | Q24 - 43" | 3" | Q24 - 43 1/2" | 36" |
Le Sabre - 4 Door max Crossbar Spread | 90 - 91 | Q24 - 43" | 3" | Q24 - 43 3/4" | 46 |
Le Sabre | 90 - 91 | Q30 - 44 3/8" | 4" | Q31 - 43 5/8" | 36" |
Le Sabre max Crossbar Spread | 90 - 91 | Q30 - 44 3/8" | 4" | Q31 - 43 3/4" | 43" |
Le Sabre | 92 - 96 | Q5 - 42 3/4" | 5" | Q5 - 42 3/4" | 33" |
Park Ave Sedan | 91 - 96 | Q5 - 43" | 9" | Q5 - 42 1/2" | 32" |
Regal - 4 Door | 79 - 87 | Q31 - 40 3/4" | 4" | Q31 - 41 3/8" | 36" |
Regal - 4 Door max Crossbar Spread | 79 - 87 | Q31 - 40 3/4" | 4" | Q31 - 41 3/4" | 43" |
Riveria | 95 - 96 | Q49 - 34" | 4" | Q49 - 32 1/8" | 36" |
Riveria | 86 - 93 | Q20 - 40 3/8" | 6" | Q20 - 40 1/8" | 18" |
Roadmaster Sedan with Q Stretch Kit | 92 - 96 | Q19 - 43 1/8" | 7" | Q19 - 41 5/8" | 36" |
Skyhawk - 4 Door | 82 - 89 | Q30 - 38 1/8" | 5" | Q31 - 37 3/8" | 36" |
Skylark - 4 Door | 85 - 91 | Q10 - 40 1/4" | 5" | Q5 - 39 1/2" | 34" |
Skylark - 4 Door | 92 - 96 | Q28 - 31 1/2" | 5" | Q28 - 30 3/4" | 36" |