well my oil drain it odd sized......its round but with a flat edge so I need to hone it out to make it round and tap it to use a AN fitting in ti. Damn blitz turbo........making me use their fitting HELL NO!!!! Well i will hone it out get a fitting and fit a NPT thread to AN thread adapter in it and go from there. I may have to use a -10 line. Either way it will work!!!!