01 21 Launch info help.

Boat is a 2001 Launch 21 V-Drive w/ 5.7 TBI and im looking for some info if anyone can assist.

Delco spark plug part number?

Original prop DIA and Pitch? Boat has a Walter V-drive w/1.46:1 gear and and currently has an ACME 4-blade 857 (13.25 x 15.5) 2 blade are folded on the tips. Anyone have any experience with this prop on this boat/engine combo?

Raw water housing part number?

Thanks for the assistance,

BUMP!

Hoping to get some info to help out new member Gettin'it.

Thanks,