| Pontiac | 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) |
| 2000 4 Door | 82/84 | Q30 - 38 1/8" | 5" | Q31 - 37 3/8" | 36" |
| 6000 4 Door | 82/91 | Q30 - 41" | 6" | Q30 - 40 1/4" | 36" |
| Bonneville | 92/96 | Q5 - 42 7/8" | 4" | Q5 - 42 3/4" | 30" |
| Firebird/ Trans Am | 93/96 | Q4 - 38 1/2" | 2" | Q4 - 37 3/8" | 18" |
| Firebird/Trans Am w/ Q Strech Kit | 93/96 | Q4 - 38 1/2" | 2" | Q4 - 37 3/8" | 28" |
| Firebird/Trans Am | 82/92 | Q4 - 41 1/4" | 4" | QQ4 - 41 1/4" | 22" |
| Firebird/ Trans Am w/ Q Strech Kit | 82/92 | Q4 - 41 1/4" | 4" | Q4 - 41 1/8" | 30" |
| Grand Am 2 Door | 92/96 | Q28 - 31 1/4" | 6" | Q28 - 30 3/4" | 21" |
| Grand Am 2 Door w/ Q Strech Kit | 92/96 | Q28 - 31 1/4" | 6" | Q28 - 30 3/4" | 31" |
| Grand Am 2 Door | 85/91 | Q5 - 39 1/2" | 5" | Q5 - 39 1/4" | 22" |
| Grand Am 2 Door w/ Q Strech Kit | 85/91 | Q5 - 39 1/2" | 5" | Q5 - 39 1/4" | 36" |
| Grand Am 4 Door | 92/96 | Q28 - 31 3/8 | 6" | Q28 - 31 1/8" | 36" |
| Grand Am 4 Door | 85/91 | Q10 - 40 1/4" | 5" | Q5 - 39 5/8" | 34" |
| Grand Prix 2 Door | 79/87 | Q31 - 43 3/8" | 3" | Q32 - 43" | 24" |
| Le Mans 2 Door | 88/93 | Q9 - 36 7//8" | 6" | Q9 - 36 3/4" | 12" |
| Le Mans 4 Door | 87/93 | Q9 - 37 1/8" | 6" | Q9 - 36 7/8" | 36" |
| Parisienne Sedan | 83/88 | Q31 - 44 3/4" | 6" | Q31 - 46 1/4" | 36" |
| Sunbird 2 Door Coupe | 88/94 | Q24 - 37 5/8" | 4" | Q24 - 37 5/8" | 30" |
| Sunbird 4 Door | 85/94 | Q31 - 37 1/4" | 6" | Q31 - 37 1/2" | 33" |
| Sunbird 4 Door | 82/84 | Q30 - 38 1/8" | 5" | Q31 - 37 3/8" | 36" |
| Sunfire 2 Door | 95/96 | Q14 - 34 5/8" | 4" | Q14 - 34 1/8" | 20" |
| Sunfire 2 Door | 95/96 | Q14 - 34 5/8" | 4" | Q14 - 34 1/8" | 27" |
| Sunfire 4 Door | 95/96 | Q14 - 32 3/8" | 5" | Q14 - 30 1/4" | 31" |
| Transport | 90/96 | Q61 - 46 7/8" | 33" | Q24 - 46 3/8" | 24" |
