[niles]

I used the most simple universal 2 wire about $15.
I understand that with an unheated configuration you should mount in a header within 12 in of the head to keep the heat up to get the V output. Don't fall for the common mustake to put it in the collector area to get the average of 4 cyl's. it's too cold there to get the output. Notice where there mounted in your modern FI car; usually less than a foot from the exhaust port.
gn