I just finished the install of the oil temperture sending units on the 496's on my 320 Velocity. Ray at Raylar suggested The best place to install them was under the oil filter on the filter remote bracket. Mounting them there will give a true temp reading before the oil goes thru the cooler. I used the small 1/8 sender due to room restriction under the bracket. Here is how it came out. Thanks Ray @ Raylar for your brilliant suggestion. VV