Rebuilding a 833 Trans

I am currently breaking down a 833 transmission to rebuild for my Duster, I have the shop manual and they are calling for a C-3638 or c-3642 trool to press out the shaft for the reverse idler gear shaft. I can not find this tool anywhere. Do any of you guys have a line for this tool or an alternate method of pressing out the shafts in the case for the idler gear and cluster gear.