I have a few questions on this aircraft that I have received as a gift from a friend of mine. He had long since thrown away the plans and the manual and I am attempting to install a ST 90 as the powerplant. What is the distance that Goldberg specifies from the firewall to the engine thrustwasher? And what is the engine offset general dimensions on the firewall (to accommodate the thrust angles). The vertical "tick" marking the centerline of the engine on the firewall have long since disappeared from a previous installation.Thank you in advance for your replies!


Sincerely,
Pete