I learned a few things this weekend. We ran a hoosier C07 tire last year and went to a D09 this year. A fellow told me that the 09 is for suspension cars and the 07 is best for hard tails??? We didn't change any parts (other than the carb) to make the extra power. We found the piston to head clearance was .012 :shock: pushrods were .080 to long and tons of blow by on the rings. Pretty easy to pick up .2 with these problems. The weight is right on the nose which probably decrease a fair bit of rear wheel weight. I'm contiplaiting doing a 4 link conversion. I don't know if this is a good Idea or is it better just to get a different chassis. :?