Wood framed or aluminum 98 Winnie Adventurer?

Hi all, going today to look at a 98 Winnebago Adventurer 33ft'er with a big slide. Got thinking that if it's wood framed that would be a huge problem with a big slide, but could be ok if it's aluminum. Does anybody know? This would serve as a 2nd RV & appears to be very clean & is very reasonable if it checks out well. Thanks!