BB heavy duty stamped steel rocker arms
I have found some threads that members have mic'd the thickness and found the heavy duty's to be thicker all around. The mopar performance rockers are currently advertised to be thicker in the pushrod cup area. MP has from what im finding out, discontinued the HD rocker arms and do not show them in the catalog. I have found some MP rocker arms at Jegs and should be getting them by the end of the week. I have 1 MP rocker arm in my parts stash that appears to be a few thousandth's thicker and has a beefier appearance in the pushrod area only, otherwise it is identical to my failed units. Myself Im not sure I have ever seen a thicker HD or thinner rocker arm. I think old originals are better quality then what you can buy today.