Welcome!
Your a lucky kid to have a father like that. Good luck on your project.
Yeah the 318 in that car, I am sure is tired, if it is the original and has little to no work done to it. Is it the original motor? 1 barrel carb or 2 barrel?
Don't worry about the flag. Everyone always tries to be P.C. these days, granted there are some wackos out there, but the flag is a bit of this country's history. Long as you are not going to start a riot and start yell'n the south will raise again, I don't think anyone should get offended. Its like watchn the Duke boys, the general wouldn't be the general without the flag on it.