I can't think of any aftermarket small block Mopar rods that use a rod bolt with a nut. Eagle and Scat I & H beams are cap screw only. Mopar use to make a 273 style rod but out of the better material, 4340 I believe. They are heavier than the original 273 but have a lot of weight, particularly on both balance pad ends, to lighten them up. It's just that they don't make them anymore. They have "Mopar" and P453685 cast into the I-beam channels.
Have you considered petitioning your track to allow some change, like staying with the I-beam configuration despite the cap screws (no nuts)? You can use the safety and cost issues if they can limit them to the lesser expensive versions, like Eagle & Scat. Recycled OEM rods will eventually cause problems for racers as well as the track. (down time/caution laps) Perhaps researching what the GM guys are getting away with can help your cause.
Mopar Performance may still have some other OEM style rods, but they have always been more expensive, IF they even have them in stock. Do a search on Summit's site.
Last edited by Locomotion; 10/13/14 07:28 PM.