My 360 in the Duster in my avatar pic is 9:1 with heavily ported Edelbrock heads (stock 5.9L Mag short block) and it has no shortage of low-end torque (and makes power to 6k rpm). I just made sure to get a custom-grind cam (Racer Brown) that took the high altitude into consideration. I'm also in CO so I know the struggle trying to make decent N/A power and not being smoked by stock turbo 4-banger cars. Of course the 2600 rpm stall converter and recently installed 3.55 gears help immensely in my car.
The concerns about torque loss due to lower cylinder pressures are valid but it's not quite as bad as some think especially those who haven't driven built Mopars up here in thin air.
