Ok well I got a couple things, I really need to know what size and thread pitch of the stock oil pressure sending unit above the oil filter. I bought this T-fitting at Lowes. Hopefully it should work, or else I will go a different route. One thing I don't like is the fact that the autometer sending unit is pretty heavy, I would hate the offset weight to loosen the fitting.

ALSO, I need a good compound to seal the fittings and sorta lock them (not permanently though). What should I get??

Hopefully if all goes planned, the stocker will be on the left side, and the autometer on the right.

NOTE: Ignore the Fuel pressure guage, goin in my buddys 383.