Be careful the check for ovality, the rocker arm ID wears more on the bottom than the top.
I haven't found any bushing or sleeve near the desired ID/OD (slightly tighter than the OEM .792", not too much metal off the rocker ID).
Anyone care to guess how thin the bushing wall can be (and still re-use the worn rocker shafts)?
Allowing for saw kerf, looks like a single 13" length will make all 12 bushings.
