Welcome, I will second what others have said about not being built real well, but that also makes them fairly easy to repair and you can improve the original shortcomings as you go. I'm rebuilding a '72 V 153(Transom, stringers and deck) and will be done shortly, its my first rebuild and has taken about 2 months of working on it afternoons and weekends. Your boat is 45 years old and if it has not been redone at all before you can probably expect to replace the transom, stringers and deck, simply because they were not originally covered in glass and time and water ruins everything. Again, its not hard to do if you are a little handy with woodworking and can learn fiberglassing. This forum is full of knowledgeable folks who will gladly help answer your questions and by using the search tool, also youtube has a lot of videos. Post some pics, old Glastrons are cool looking boats.