My 2 cents, and that's about what it's worth, is make sure you have a 90* on there somewhere. The reason is when you take off the plug, you're not unscrewing it from the engine. An elbow will work for you in that regard. The ball valve is just something I do to make life easy. I take off the cap, then open the valve. Makes it neater.
I used a brass 90* brass street elbow (one male and one female side) because it took up the least amount of room on the horizontal plane, and I didn't need any more horizontal distance. With the elbows, there's all different distances, some will work better than others depending where it's going to end up from the horizontal plane.
Last edited by jsup; 01-15-2018 at 06:13 PM.