Summer will be upon us soon! Make sure you check the Meets subforum to see if there's a get-together near you!
They send the lube to put on the treads to get the true torque, any friction throws the torque numbers off.
You need a set for the 1.6L, 1994 miata used the 1.8L.Though they may be the same between the two, stick with the listing for the 1.6L (89-93 IIRC)