Installing larger stud
 

I'm finishing up my ext steering install that utilizes the 3 rear cover attach points.
I may need to install a larger diameter stud in the driveshaft housing where the rear cover mounts (lower fastener).
Is there sufficient meat in that area to install a 7/16" dia stud?
Would fine or course thread be best when re-tapping the enlarged hole? Seems like course would be better/easier.

I'm hoping I can find the right 3/8"------> 7/16" stud but if not, I need to start working on the backup plan.

BTW, pics of the stud I need are here:
http://www.offshoreonly.com/forums/w...-s-s-stud.html