Picked up a set from Van's, $14 including shipping on eBay
Took the driver seat stopper out; stud came out easy as the original stop was cracking
Put the new stopper in a cup of hot water & the stud in the freezer
After a few minutes, put some lithium on rim of the stopper, put the stud in a deep 3/8" socket (1/4" drive), couple of raps with the hammer & done!