Briz...
from the pix, it appears to be in pretty good shape....
as for the exhaust.... grab a long rod (longer than the mufflers), if it runs all the way to the header pipe inside the muffler, the baffles have been knocked out,..... If not, pull the mufflers and knock them out.... I'd guess a hi percentage of us Americans run that way, and they sound nice.
It was one of the first actions we did to help get the heat out of the engine in early days... with a nice tone...
the baffles are nothing more than freeze caps, spot welded inside....
If they are already out, and you want more noise.. .... well each to his own.... hee hee hee. There are OEM slash cuts, long shot guns, and short shot guns, and the notorious, staggered short shot guns. Plus the array of owners with custom....
enjoy!!
Bruce