I stripped the fitting on my oil pressure line also, after taking them off and putting them back on 3 or 4 times... just was going too fast one day cause it was getting dark.
I ended up drilling and retapping - talk about stressful. Tapping the block while it's in the car is ridiculously hard because you can only use one end of the T-handle - the crossmember gets in the way if both ends are screwed on.
Anyway I used a larger fitting from the A/C hardline (JB welded the back of the nut to the line so it wouldn't leak), flanged the end, then cut the existing oil hardline in the middle and flanged that line's end. To connect them, a little bit of heater hose (rubber high temp hose) and some good hose clamps. Works fine and was free, but when I upgrade turbos I'm definitely going to SS lines.
EDIT: A couple shops saw this setup on my car, and all I hear out of them is "M-i-c, k-e-y, m-o-u-s-e" lol. Just remembered that
