+1
The studs have a knurling press-fit.
Use penetrating oil and then hammer away with the hub on a solid surface and a steel nut on the stud.
Or press them out if you have access to a press.
When pulling the studs into the other hub, a little grease helps.
__________________
1980 Carrerarized SC with SS 3.2, LSD & Extras. SOLD!
1995 seafoam-green 993 C2, LSD, Sport seats.

Abstract Darwin Ipso Facto: "Life is evolutionary random and has no meaning as evidenced by 7 Billion paranoid talking monkeys with super-inflated egos and matching vanity worshipping illusionary Gods and Saviors ".