Thanks
My oil temp is not connected there, I have the brass block which is a "T" piece all 1/8 NPT fittings - not sure if the block is a 1/8 standard but if not the Vortech kit has an adapter in - (Never seen a standard one to compare) all I did was add a 90 bend in so the Pressure sensor points forwards instead of straight out - the SC pickup is in the same place. I think its a 4 but I used the same adapter that was there before which has a 1/8 NPT at the other end.
I do know the guy that I get all my bits from (pipe and adapter wise) said - "You always bring me these wierd American fittings" last time I went in
I can get you anything you need if you don't have one laying about (I bet you have though!)
Are you going to add an extra T piece then? if your oil pressure sender is there at the moment anyway?
If you need an adapter let me know I'll get one posted up to you mate