I worked on final shaping of the firewall today. It needed quite a bit of grinding to get it to shape. Actually, I used a 36 grit flap disk and went to town. The object is to get the curve of the top of the firewall to be flush with the Lexan windshield. Or, as close as possible which is what I did. The fiberglass piece you see in the pics gets covered over by the boot cowl later anyway, so close is good enough.
The other task was to test fit the motor mount. This required quite a bit of reaming but it fits fine. Got all the bolts, nuts and washers on and tightened down. Looks pretty good. Won't be long now...