I got a Sage 1090XP rod for my birthday this year and the shop where I purchased the rod and reel gave me a SA Mastery Series Pike/Muskie WF-10-F line. Some of the flies I have use in the past for pike work better if fished 3-5 ft. below the surface, any suggestions on a sinking head that I might loop to loop connect to this line to get a larger bucktail type fly down in the zone. Thanks for your help.

You might try a Cortland Mini-Head kit, where you make your own quick-change sink tips with braided loop connectors. They can mess up casting mechanics a bit, though. The best solution would be to get a Cortland 444 Tropic Plus Intermediate line...they cast like a rocket, and pull your fly down only a couple of feet.