Tig weld vs J-B Weld...LOL

YY1 said
Can you tap the inside of the housing?

yes .

a 1'' npt needs a 1-5/32 hole and 1-1/4''npt needs a 1-1/2 hole . I ran a 1-5/32 drill into mine and taped the hole 1'' npt . when taping be careful remember it's tapered .