I have autometer's phantom voltage, oil temp and oil pressure gauges and the job was too big for me and my friend so I have a shop doing the install. Anyway they gave me a call saying that they couldnt install the oil pressure because it required drilling to oil pan. Now, I'm not sure but I thought I remembered at least a few people installing the sender somewhere in one of the heads? Am I right...anyway, I'm searching now, but if anyone knows for sure, please let me know...thanks