hey guy's, i have a sukhoi31 and wan't to put a Mvvs 160 gasser in it, and as you see came to the point of installing the engine mount to the firewall. no marks as of where to install the mount!! See image attached.

any pointers on how to install it at the right place??

There are "tick" marks around that hole. Space the two engine mounts equally on either side of the tick mark. Align the top of the mount's railing to the horizontal mark.

Great, thanx minnflyer