Making a kit has proved nearly impossible as it doesn't solve the original issue of tapping into the Oil Filter holder.

You will need:

2, 1/8" NPT Male into 1/8" NPT Female
3" long tube with 1/8" NPT Male

That's it then just screw in the sending unit.

You will also need a 46mm or 1 7/8" ratchet to remove the oil filter housing.