I'm doing a 302 swap in 2002 ranger edge I have a 88 302 H.O and pair of 69 closed chamber heads. I bought the heads from a guy off of the internet and he told me that the rocker studs where 3/8 so I didn't pay any attention and installed them. I then attempted to install my roller rockers and discovered that the studs are way to small. I measured them and they appear to be 5/16 or 1/4 which I've never encountered before. I've looked everywhere for 5/16 roller rockers with no luck. Are there any? If not what is my best solution without taking the heads off. I've tried to double nut the studs and unscrew them and that's not an option. I'm stuck if anyone can help it would be greatly appreciated. Thanks
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