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Originally Posted by HandOverFist

If I was determined to go that route I would can the conversion and just have the pedestal bases machined down for standard screw-in studs. http://www.mediafire.com/view/mq88m1...M-6564-All.pdf

That would be a valid DQ.

As per the 2013 nhra rule book, (the latest one I have), section 10A page 3, stock class rules..............cylinder heads...........quote "Any evidence of modifications from the original castings will be grounds for DQ"..........here comes the good part............quote "as determined by nhra in nhra's sole and absolute discretion"

Any lawyers in the house?? What does "sole and absolute discretion" mean??

I had several 5.0 class racers tell me to wack the pedestals for studs. So I asked Bruce one year at Somona. His answer............"absolutely no"

I run the oem rocker, fulcrum and bolt with a shimmed lifter, works just fine.
Your mileage may vary.