nice looking welds, simple motor mounts, i like it.
if your concerned that the firewall gap is too far,
throw your core support and radiator in to see if you have room for a fan.
typically these trucks have the motor to far forward, most of the motor is over the front axle.
the further back you have the motor, the better your weight distribution.
offsetting your motor mounts over the x-member moves your weight back.
i moved my motor back as far as i could, approx 3/4'' clearance to the valve covers.
there are 2 big plugs out the back of the distributor that i had to box the hump for.
also gave me lots of room up front for the fan