| Isuzu | 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) |
| Impulse Coupe | 83/89 | Q14 - 32 1/4" | 6+" | Q6 - 34 7/8" | 33" |
| Impulse Coupe | 90/93 | Q6 - 37 1/8" | 6" | Q6 - 37 1/8" | 16" |
| Impulse Coupe w/ Q Strech Kit | 90/93 | Q6 - 37 1/8" | 6" | Q6 - 38 1/4" | 24" |
| Pickup, Hombre, Std Cab | 96 | Q58 - 39 1/8" | 4" | Q58 - 39 1/8" | 16" |
| Pickup, Std Cab | 85/8 | Q43 - 39" | 4" | Q43 - 39 1/4" | 16" |
| Oasis | 96 | Q5 - 42 1/8" | 21" | Q5 - 41 1/2" | 27" |
| Rodeo | 91/96 | Q43 - 39" | 6" | Q29 - 40" | 36" |
| Stylus Sedan | 91/93 | Q16 - 35 3/4" | 8" | Q16 - 34 1/8" | 24" |
| Stylus Sedan w/ Q Strech Kit | 91/93 | Q16 - 35 3/4" | 8" | Q16 - 34 3/8" | 30" |
| Trooper 4 Door | 92/96 | Q34 - 44 1/2" | 6" | Q34 - 44" | 36" |
| Trooper 4 Door Max Crossbar Spread | 92/96 | Q34 - 44 1/2" | 6" | Q34 - 44" | 47" |
