Hi Paul,
I put the
Oil Temp and presser senders on an
Oil Filter Sandwich Plate which had 1/8 NPT holes in it. (found it hard to find one with 13/16 UNC
Oil Filter thread though - had to combine two - long story)
Water Temp was using a 1/8 NPT to 12 mm adapter into the drivers side head, which has a bung in it.
Be careful with the adaptor though as Boxhead said there's not much meat left on it. I broke the first one and had to get an Esayout to get it out. Replaced it very gently and used locktite. Doesnt leak.
Rgds
Gregg