This link will provide you with all the info you need regarding bushings(you may need to make a profile and password)...
:arrow:
http://www.theoldone.com/forum/topic.asp?TOPIC_ID=12644
These guys have been racing pro stock, Top Fuel, Cart, and Indy for 30 or more years (recently turned honda), and I have been reading their posts and discussions for years. Also the people posting on this forum know what they are talking about, and have the funds to try different things. If you don't have a pass word to their forum,
GET ONE. I promise you won't regret it...