First off, thanks for all the advice.
On the roof beading -- do you glue it to the existing roof then sand to that profile?
I had planned to use some type of L angle, to assemble the side to the roof, from the cars I've seen in person it seems like the roof/side joint can have gaps and be problematic.
I will check out the Scale City parts, I have bought some interior detail parts from them for other projects.
I know these won't be state of the art cars, but I like to build kits and I've wanted to put a couple of these together since I first saw the kits many, many years ago.