Looking good. If you can, put in the flexible filler to finish things up.
I know on these cars there are limits due to the license plate mount needing to fold down to get at the gas cap and filler neck but with a fuel cell like your install you could go with a fixed plate mount unless you have something behind it like a master on/off switch.
Just a pet peeve of mine but when I tucked the bumpers on my 73 I also sectioned then to narrow them and also line them up with the headlight trim. Granted I painted mine but one could after the work have the new reworked bumpers replated.
On the pictures above I have a Flickr account to store and link to them.