To Restore or Not to Restore

I have a 66 cuda not in bad shape but showing 40 plus years of use i have debaited upon how far i want to go with a restoration and as of right now i'm leaving it alone and enjoying it as it is, on the other hand we have a 73 charger my son bought as a project in august 2011 i have been doing metal work since then just finished last week and began skimmin and sandin my son has less than 500 dollars in this project in supplys/tools all the patch panels i made from scrap sheet metal and i'm doing the labor, every car i have done was a low buck project that could compete with the high dollar cars and place most of the time. Now i just build them to take to car shows and relax and talk to folks and give myself something to do not interested in trophys or what they are worth or selling them just surrounding my self with automotive history till my days on this earth are over then my family can do what they wish with them.