fitting for my block HELP!!!!!!!!!!!!

[charger0926]

please help! i am installing a mech. oil pressure gauge on my 07 attak.
i am looking to find out what fitting to use on the block to "t" into the oil pressure sending unit. i believe that it is a metric pipe thread, and the fittings that came with the auto meter gauges are standard pipe threads. i am basically copying black gt"s gauge set up on mine and have been waiting to hear back from him as i sent him a pm. if anyone else has installed a mech oil pressure gauge let me know what you did to make it all work

 

[charger0926]