Here's the type of lifter I'm using:
www.ebay.com/itm/361996686045?It will be necessary to fabricate pushrods with the correct length and end shape, since the lifter end of the pushrod needs a 5/16" ball. I'm going to use thick wall 3/8" OD stainless steel tubing and press-fit end pieces from
www.pushrods.net I'm also working on a project to install 18MM ID Torrington needle bearings in stovebolt rocker arms, on reduced diameter original rocker shafts.
Jerry