OK, Here's some useful data.
This is the Commodore sump with it's reservoir at the front. You can see it hangs down nearly an inch below the bellhousing flange.
This is the Camaro/Firebird sump. It has a rear reservoir but it also hangs nearly an inch below the bellhousing flange.
You can se it here with my box bolted to the motor.
This is the LS2 Corvette sump. The LS1 Corvette sump has wings on the side and presents it's own clearance problems in some cars. As you can see the bottom is flat and flush with the bellhousing flange. This sump should gain you nearly an inch of clearance over the others.
