there is an outfit that has videos on youtube how to rebuild Farmall engines and they advertise they will make sleeve puller pucks. there is a pretty young lady and her husband that do the work. you will know when you get to the right video, a young lady rebuilding tractor engine,
I would offer to make you a puck but sold my big lathe when I moved
might check mscdirect for high strength all thread and grade 8 nuts if you don't have local source.
its very important to make puller legs both exactly same length so sleeve is pulled straight.
if you pound on sleeve it will crack up and then you will be left with option of cutting it out somehow without damaging block or getting portable van Norman or kwikway boring bar to cut it out.