The cam is a new XE 268
The lifters are new Comp 822-16 that came with the cam
The pushrods measure out to stock length, 7.5". I believe that the pushrods were replaced when the previous owner redid the engine, so about 4-5 years ago.
The head gasket is Mr Gasket 1121G at .028 which is about .01 less than my previous Felpro gaskets.
If I go with adjustable I am under the impression that I have to change not only the rockers but also the push rods AND the lifters. That would be a minimum of a $400 proposition.
If I could use the 822-16 lifters with adjustable rockers then I think my next step would be to change out the lifters, as its only about $100.