Was Kenne-Bell in the market of selling Carrillo rods, or was this something they had made for themselves, I wonder. The paper has some age to it. See the page with the Specs, Maybe the Machinists in the group can help with the fitment. These are an H-beam rod. Interestingly they all has a 6 or maybe a 9 on the cap.
If your building a motor and don't currently have Rods I would try and stay away from H beam type Rods and with use a I beam type. Although H beams are very strong due to there shape they keep a lot of oil kicking around, and as such rapped around the Crank which at high revs makes for a bunch more drag and inturn lost HP. A tight fitting Crank scraper / windage tray combo should be considered mandatory with H beam Rods.
