my car is pissing oil from the area of the turbo oil feed

i have 2 unions with a temp sender an oil pressure sender and standard oil pressure switch

i need to replace these but can anyone tell me the thread size of a std water temp sender

and the thread size i need for a cosworth sump

i know the std pressure switch is 1/4 npt, is the temp sender 1/8 npt ?

any info apreciated ta