Are all Indy's like this?
My SRs never gave me any low oil pressure at idle or low speeds. SR's have external oiling lines also.

If I wasn't experiencing any low oil pressure problems, than was I over looking another problem with good strong pressure and or flow at the heads?
Cold starts would be at 70-80 pounds, warmed up and at highway speeds 40-60 pounds. 25-30 at curb Idle.