[Excaliber]

Well Marcos, your '23rd point' is at best controversial when all things are considered. Center oilers tend to crack the block at the main bearing area when pushed much beyond 6500 rpm under full power. This is a major limiting factor in how much horse power they could ultimatly make. Side Oiler design can spin up to 9000, at least for brief periods, a center oiler would disentegrate at that rpm.