Firewall pre-drilled bolt holes were filled with dowels. New mounting points for the G-62 were drawn and drilled. A 1/8" aluminum backing plate was constructed for the back side of the firewall to spread the load of the through bolts (all will be thoroughly epoxied and braced on the inside, also). Engine was bolted up to the firewall and the cowling slid into place. TADA! Engine fits inside cowling, may need a bump for the spark plug cap. Specs for a custom Bisson wraparound muffler have been sent for a quote, the mod would raise the assembly to almost level for inside cowl clearance.