Speedo correction

What (if anything) have people done to correct speedo/odo with larger tires? Does someone have a list of the different little plastic speedo gear in the transmission (teeth count) available from Toyota??

 

i have seen that superlift has something called a superlift truspeed signal calibrator, will work on the 98-04 tacomas. performance products has them if you want to check them out. here is the link to performance products....

http://www.performanceproducts4trucks.com/

 

I used a Dakota Digital to correct mine.
Its been working great so far. I have the info gathered, but just need to get it posted to my site for the full write up.