Hello just joined and looking for some help. I’m very interested in a gulfstream 2005 with twin 2005 Yamaha 4s. Boat was surveyed and structurally. Everything seems to be in pretty good working order except for a few small miscellaneous issues. Question is how I know if the exhausts will have that shredded issue that a lot of them seem to have? Is there anyway to tell for sure if there is not too much rust throughout the exhaust system without completely taking the motor apart? Thanks in advance for any help.