| CHEVROLET / GMC TRUCKS | 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) |
| Blazer / Jimmy - Full Size - 2 Door | 79 - 91 | Q30 - 49 1/2" | 3" | Q30 - 50 3/4" | 16" |
| Blazer / Jimmy - Full Size - 2 Door w/ Q stretch kit | 79 - 91 | Q30 - 49 1/2" | 3" | Q32 - 50 3/4" | 36" |
| Blazer - Full Size - 2 Door | 92-94 | Q24 - 46" | 4" | Q24 - 46 3/8" | 16" |
| Blazer - Full Size - 2 Door w/ Q strech kit | 92-94 | Q24 - 46" | 4" | Q24 - 47" | 36" |
| Blazer S-10/ Jimmy S-15 - 2 Dr | 95-96 | Q58 - 39 1/8" | 4" | Q58 - 39 1/8" | 16" |
| Blazer S-10/ Jimmy S-15 - 2 Dr w/Q Stretch Kit | 95-96 | Q58 - 39 1/8" | 4" | Q58 - 40 1/2" | 36" |
| Blazer S-10/ Jimmy S-15 - 2 Dr | 82 - 94 | Q35 - 38 1/4" | 4" | Q35 - 39 1/2" | 16" |
| Blazer S-10/ Jimmy S-15 - 2 Dr w/Q Stretch Kit | 82 - 94 | Q35 - 38 1/4" | 4" | Q35 - 39 1/4" | 36" |
| Blazer S-10/Jimmy S-15 4 Door | 95 - 96 | Q42 - 39" | 5" | Q42 - 39 1/8" | 36" |
| Blazer S-10/Jimmy S-15 4 Door-Max Crossbar Spread | 95 - 96 | Q42 - 39" | 5" | Q42 - 39 1/8" | 41" |
| Blazer S-10/Jimmy S-15 4 Door | 91 - 94 | Q5 - 37 7/8" | 4" | Q5 - 39 3/8" | 16" |
| Blazer S-10/Jimmy S-15 4 Door w/Q Stretch Kit | 91 - 94 | Q5 - 37 7/8" | 4" | Q34 - 39 3/8" | 36" |
| Lumina Van | 90 - 96 | Q61 - 46 7/8" | 33" | Q24 - 46 3/8" | 24" |
| Pickup, Full Size, Standard cab | 88-96 | Q24 - 46 3/8" | 5" | Q24 - 46 3/8" | 18" |
| Pickup, Full Size, Extended cab | 88-96 | Q24 - 46 1/4" | 5" | Q24 - 46 1/4" | 18" |
| Pickup, Full Size, Extended cab | 88-96 | Q24 - 46 1/4" | 5" | Q24 - 46 1/4" | 36" |
| Pickup, S-10/S-15, Standard cab | 94-96 | Q58 - 39 1/8" | 4" | Q58 - 39 1/8" | 16" |
| Pickup, S-10/S-15, Extended cab | 82-93 | Q9 - 38 3/4" | 4" | Q8 - 39 1/8" | 16" |
| Pickup, S-10/S-15, 3dr Ext cab | 96 | Q58 - 39 1/8" | 4" | Q58 - 39 1/8" | 16" |
| Pickup, S-10/S-15 Ext cab | 94 - 96 | Q58 - 39 1/8" | 4" | Q58 - 39 1/8" | 16" |
| Pickup, S-10/S-15 Ext cab w/Q Stretch Kit | 94 - 96 | Q58 - 39 1/8" | 4" | Q58 - 41 1/2" | 32" |
| Pickup, S-10/S-15, Extended cab | 82-93 | Q9 - 38 1/4" | 4" | Q8 - 39 1/8" | 16" |
| Pickup, S-10/S-15, Extended cab- w/ Q strech Kit | 82-93 | Q9 - 38 1/4" | 4" | Q5 - 38 3/4" | 33" |
| Suburban | 92-96 | Q24 - 46 1/2" | 6" | Q24 - 46" | 36" |
| Suburban Max Crossbar Spread | 92-96 | Q24 - 46 1/2" | 6" | Q24 - 46" | 50" |
| Tahoe 2 Door | 95 - 96 | Q24 - 46" | 4" | Q24 - 46 3/8" | 16" |
| Tahoe 2 Door w/ Q Strech Kit | 95 - 96 | Q24 - 46" | 4" | Q24 - 47" | 36" |
| Tahoe 4 Door | 95 - 96 | Q24 - 46 1/2" | 6" | Q24 - 46" | 36" |
| Tahoe 4 Door | 95 - 96 | Q24 - 46 1/2" | 6" | Q24 - 46" | 50" |
| Yukon 2 Door | 92-95 | Q24 - 46" | 4" | Q24 - 46 3/8" | 16" |
| Yukon 2 Door w/ Q Strech Kit | 92-95 | Q24 - 46" | 4" | Q24 - 47" | 36" |
| Yukon 4 Door | 95-96 | Q24 - 46 1/2" | 6" | Q24 - 46" | 36" |
| Yukon 4 Door Max Crossbar Spread | 95-96 | Q24 - 46 1/2" | 6" | Q24 - 46" | 50" |
