L O N G years ago, when i first went into car and truck repair,,i did my first studs replacement.............after beating for a bit..[6ft, 220] was getting pissed,,,,,,sooo. i got a 1 inch dia pipe,,and welded it to a 6x6 flat piece of steel stock...when driving studs with a hammer, the threaded part of the stud, would stick into the pipe. plate on concrete,shim the other side of hub so level, put a bit of oil on stud shoulder,stud in hole,,and about three wacks later,,IN!!!! which would work great for him in that lot..presses are nice [ have one] but sometimes!!!!!! the pipe,,being just a hair larger than the stud,,backs up the hub wayyyyyy more solid. not doing this,,can bent or break hubs...seen it...even in a press......