home made A arm press

[peglegs]

am i on the right track?
This is for a 74 fr. end not a 67 a few answered concerning a 67, was my fault till i added this

have to remove the shafts from the A arms in the next week and others have stated a machine shop charges 25 - 50 ea arm? whoa! This is a rough draft & still needs refining but are there any machine shop guys out there that would crytique this for me? Will this accomplish the task? Open to any and all suggestions if ya'll think this will work ill post more updated details and a "how to" if its a keeper......guess im just cheap lol where the bottle jack protrudes through the 4x will need a "shield" or something to stabilze to prevent a blow up or blow out? left it out to view detail. this should cost under $20 to build if it will work correctly.