The oil lines won't need flex because they travel straight from cooler to turbo, which is all stationary. You could use a fancy tool or try different size cans (rattle cans, or canned foods work) for smooth bends in lines.

I've been fabbing for a long time. I did this guys IC and piping last month:



This setup also hides behind bumper:



You'll need to start with the IC's placement before you cut into your IC pipes. They're more forgiving that way.