Originally posted by KleinBK
GasRookie,
You may have already tried this, but here it goes. You want to mount the engine inverted, but the carb is too low. Put the engine on the other side of the engine mount. In other words, place the engine mount on the firewall inverted, but bolt the engine to the bottom (the side now facing up) of the engine mount. That should raise the carb the thickness of the motor mount rails.
Hope that makes some since,
Bryan
This will alter the thrust line.