OK, using the chart and the estimation from links in the wiki (I may call a Dealer parts dept this weekend to compare) we've got
VSS/mile @ ~ 5000
usec/gal @ ~ 266228338
I'm shooting to get tapped and mounted this weekend, so we'll see. (wow that sounds dirty...)
*edit* - following another link in the wiki, I find 4000 VSS/mile. Well, it'll be around one or the other so I'll know if it's 20% off.