Spitting oil through tailpipes.

My first thoughts are it's common to find oil droplets on the rear of the car. More common if the engine is a performance engine and you don't let it warm up before you back it out of the garage. Strokers may use more oil especially if the rings are narrow and the pistons short. Plus you don't have any evac system and it's a street car. The gist of this all is:
You're over-thinking this and it's fine. Keep an eye on the oil level. Get a functional PCV system on it. Let it warm up fully before you drive it. Not a big deal.