What about breathing/venting the crankcase with those MP valve covers? My 340 currently has 2 stock valvecovers with the breathers in the center. The breathers are not connected to header scavenge tubes, just dump down there. I am at the crossroads of putting breathers on the MP valve covers or putting on the stock ones from the 340 and running them to collector mounted scavengers.
Whatcha gonna do? 416 probably making a lot of case volume changes thus pressure fluctuations.
Good looking setup. Do you wish that you had painted the engine red instead of hemi orange? I kinda am as the car will be white with a crimson red strips and the engine has MSD dist and wires also red.