Apex driver size?

[Brad0426]

I am stretching my apex 121" to a 153" and would just like to get some input on drivers. Anyone use the Avid 7 or 8 tooth 3" pitch drivers out there and which one would work better? There is only a 2 1/4 inch track going under it so with either i dont think i should have clearance issues just wondering on gearing! Thanks!

 

[Super Sled]

Get in touch with scmurs or motopsycho from OFT. They really know their stuff when it comes to stretching Yamahas.