We stock all versions of Dominator and American Turbine Bowls. 10.5"  Bowls are available with the following options
1.  Extrude honed finish proven to improve flow.
2. A356 Hipped Race Bowl is drilled for 16 fastener locations (Call for Price)
 
Notes: 
*All american Turbine bowls are 10.50" center
*Dominators can be either 10.25" or 10.50"
*All Berkeley pumps are 10.25" center