hotrod lincoln,

Looks like I will need to run a breather cap. I just like the look of not having a big bulky cap on that nice looking polished offy valve cover. I guess the only other option would be to drill a hole on the backside of the valve cover, tap it and place a fitting into it an run a line to the carb like you mentioned. I did run the motor without a breather cap for a while....what damage could that do?