Adjustable rocker arms

I found these items at the Summit homepage. But are they compatible?
http://www.summitracing.com/parts/CRN-64770L-1/
http://www.summitracing.com/parts/CCA-5C3P-16/
Comp Cams vs. Crane Cams, would the thread on the Comp Cam cup style adjuster fit to the thread on the Crane Cam rockerarm?
And I guess I would have to measure to get the new length of the pushrod.