I can get used (10 Drag runs 1/4") Yella Tella YT6008 rocker arms for a third of the new price. My questions is, are they strip / race only use only? I would bolt them in my 55 Chevy 355 cui for street / strip. They are looking brand new. https://www.ebay-kleinanzeigen.de/s...small-block-roller-rockers/913907426-223-7812 Yella Stella information http://store.yellaterra.com.au/chevrolet-v8-small-block-platinum-7-16-rockers-ratio-1-55-yt-6008/ If I buy these I have to change the rocker arm studs to 7/16". What are your opinions?