It's official my Model IV will have a 912. I picked up an older 912 and after 10 years of playing around with 582's and learning how to keep them running and avoid cold seizures and motor outs, I get to learn a whole new way of running motors and staying in the air. I did not get an exhaust or motor mount so I have lots of work to do. I have been searching the photo albums looking for mounting techniques. Please feel free to add any photos on firewall forwards for the 912.