Amen to the $500.+ I have, from the front of the firewall to inside front edge of the cowl approx. 6". Is this going to be enough to mount a gas engine? Really looking at the RCGF 26cc. If anyone has one of these let me know what you think as far as keeping it in the cowl. I bought Santa a GPS so he could find my house with a new gas engine. I even programmed it to our chimney. If you see him at your house, remind him to stop here.