Ok, I did buy restrictors and put them in but then took them back out and plugged the holes. I'm running a 3 stage dry sump system and the Dart SHP block is designed for priority main oiling so flow to the bearings should'nt be a problem. I am running Lunati Solid Rollers (.300 taller), Comp Cams 3/8" Tapered Chrome Moly Pushrods w/T&D Shaft Rockers on AFR 227cc Aluminum Heads. Here are a few pictures of the motor, almost done. Thanks for all your input.