They are the race series. The part number is SCP-1000. They are NSA for 3/8 stud. They have a little over 3,000 miles on them. Still in brand new looking shape. Im building a new 383 and want to go with 1.6 roller rockers. I am looking to get $125 shipped OBO! Or i will trade for 1.6's!!

 

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i just went with a set of these rockers 1.6 SA 3/8" and they are BEAUTIFUL! great buy for someone needing 1.5 Ratio!