Getting ready to do this on my 2011 Ultra Limited. I will likely go with the 30t from a 2011 Tri Glide. I want a couple hundred more RPM in 6th to make 6th more useable at 70 MPH. My final drive ratio should be 3.06.The brunt of this question is, I think I may be able to use my stock belt, but will probably be at the most rear adjustment. I'm OK with is as the belt has less than 10K miles on it and I'm not hard on the bike. Has anyone here done the 30T front swap and been able to use their OEM belt?