I had the cam already otherwise I would have opted for the roller.As far as rotating mass,I was refering to the 904 vs the 727.
You are 100% right in regards to the 904.
The sm blk mopar runs much quicker with the 904 behind it.And as far as the 360 being a pig,it was in the stock form I was refering to,although I still think the 318 magnum is the way to go dollar for dollar.Also,340's begining to quite rare,The magnum 360 with the 318 magnum crank and bored .040 makes a killer package with the roller setup.Just a thought.