Tgraf1,
Yes,
Bullet HollowPoint, Exile and Wetsounds, all have a version that will fit your tower (arch).
Check out the new Bullet HollowPoint 770 Neo. Incredible! Nice midbass and smooth. A 7.7" driver that is no larger than the typical 6.5" pod.
Also, just shipping will be the new Wetsounds Rev8. A true 8-inch HLCD in a pod the size of their previous Pro60 6.5" pod. Check out the reviews on Wakeworld. Great long range projection but with a warmer and smoother response for near field listening. This is particularly important with a side-mount arch-type of tower. The lower mounting height plus the forward lean means that the rear seat occupants will get alot more tower speaker radiation versus the traditional tower. So they better not be shrill.

You should be able to find local dealers in Phoenix for the above offerings.
If possible try and get a side by side comparison before buying.

David
Earmark Marine