rfan_1: I have had plenty of issues with joining halves in the past to teach me to leave access to it, hehehe... thanks for the heads up though.

Okay, while I was waiting for the sheeting on the second wing half to dry, I started thinking about the firewall/mount. A little info: I am planning on attempting the foam plug -> plaster mold -> fiberglass cowl route to tidy up the front end of this plane and allow me to easily make new cowls if I change the exhaust from the ugly ST stock exhaust. I am using a Dave Brown 90FS mount with a Supertiger G90 engine. I have attached pictures of my preliminary layout. I am really not sure about how far out to mount the engine, but I am thinking I will hold off and try to get a little balance idea down the road before committing to drilling the engine mounting holes in the mount and shapeing the cowl plug.

Questions:

1) Does the top mounting hole location look like it will be too close to the fuel line hole (strength is the consideration I am thinking of)?

2) With the side mount engine, the carb will be lower. At what point do I need to measure the drop to readjust the tank floor? The carb venturi?