| Daihatsu | 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) |
| Charade 2 Door | 88-92 | Q16 - 33 3/4" | 5" | Q16 - 32 7/8" | 16" |
| Charade 2 Door w/ Q Strech Kit | 88-92 | Q16 - 33 3/4" | 5" | Q16 - 35 1/8" | 30" |
| Charade 4 Door | 90-92 | Q16 - 33 3/4" | 5" | Q16 - 35 1/8" | 30" |
