Bolts or studs and why

I have the Edelbrock heads on my 340 and I used studs only because I didn't want to wear the bolt holes out with taking the headers on & off also it's nice to put the exhaust gaskets on the studs & slide the header on not having to need 4 hands. ARP makes studs that work great and so does Hughes Engine. By the way there is no water on the exhaust bolts on my Edlebrock heads.