The block actally has BSPT threads . Get a BSPT to NPT adapter T with a 1/8th NPT to -3 an fitting and run your feed line to your turbo

Get under the bottom of the car behind the block
..


Take this off


thread Oil Pressure sender into T

Now tighten it back in , but try not to over tighten it as the BSPT threads are semi-fragile

It should look like this


Now run it to your turbo oil feed spot and tighten


It should look something like this



You can buy the oil line kit here

Hope this helps