I'd also have to agree with the posts in this forum. Fiberglassing the nose of the airplane really isn' necessary unless specifically called for during the assembly of the airframe. What "is" necessary is "fuel proofing" the nose section so that the oil and nitro won't migrate into the wood and glue joints and then start to do bad things. What I've used to fuel proof mine is epoxy finish resin which works well for me.

If you are concerned about the firewall being secure with the airframe there two thing that I've done which has worked well. One is to drill about 4 1/8" holes through the side of the fuselage and about a 1/2" deep into the firewall and then glue some 1/8" hardwood dowel stock in them. A little work but once completed and sanded smooth it would be hard to tell when covered. Believe me you'd total the airframe up before that firewall will let loose.

Another more simpler way is to glue some triangle stock on the front side of the firewall and the fuselage side. Not as pretty but it works well.

Hope this helps.