| Oldsmobile 2 of 2 (Delta 88/Regency 98 - Touring Sedan) | 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) |
| Delta 88/ Regency 98 2 Door | 79/85 | Q31 - 44 1/2" | 2" | Q32 - 44 7/8" | 28" |
| Delta 88/ Regency 98 4 Door | 79/85 | Q31 - 45" | 4" | Q31 - 46" | 36" |
| Delta 88/ Regency 98 4 Door Max Crossbar Spread | 79/85 | Q31 - 45" | 4" | Q31 - 46" | 41" |
| Delta 88/ Royale 2 Door | 86/89 | Q24 - 43 1/2" | 3" | Q24 - 44" | 36" |
| Delta 88/ Royale 4 Door | 86/89 | Q24 - 43" | 3" | Q24 - 43 1/2" | 36" |
| Delta 88/ Royale 4 Door Max Crossbar Spread | 86/89 | Q24 - 43" | 3" | Q24 - 43 3/4" | 46" |
| 88 Royale | 92/96 | Q5 - 42 7//8" | 6" | Q5 - 43" | 33" |
| 98 Regency Sedan | 85/90 | Q31 - 44" | 5" | Q32 - 43 3/4" | 36" |
| 98 Regency Sedan Max Crossbar Spread | 85/90 | Q31 - 44" | 5" | 44 3/8" | 44" |
| 98 Regency Sedan | 91/96 | Q5 - 42 1/2" | 5" | Q5 - 41 3/4" | 36" |
| Silhouette Van | 90/96 | Q61 - 46 7/8" | 33" | Q24 - 46 3/8" | 24" |
| Toronado/Trofeo | 86/92 | Q20 - 40 5/8" | 6" | Q20 40 5/8" | 18" |
| Touring Sedan | 87/91 | Q31 - 43 3/4" | 6" | Q32 - 44 3/8" | 36" |
