[rexs73gto]

The oil pressure sensor is the easy one it is in the same spot as the one on the 400. If it's a gauge it will be a bell shaped unit brass in color or dirty oil covered. HA HA. It will have the 1 wire hook up also. The temp sender is the unit on the left side of the T-Stat houseing & will have 2 wires to it. There will be another one also that is mounted to the left head between the 1 & 3 plug. It's a sorta back up to make a proper reading, it is about the size of a 50 cent piece with 1 wire to it. Take it to hopefully you will have a spot to put it in on the new engine . I will screw into a 5/16 thereaded hole (bolt hole) The temp sensor is about 1 1/2 inch tall has a rubber plug with 2 wires to it , again left side of the T-Stat house.

[Mr Twister]

Is that 229 a 3.8 buick even-fire V-6?