Personally, I wouldn't take out a loan that big and go that much further into debt in this crappy economy and sorry job market. Besides, your car is already really nice , finished and probably runs great and already reliable by the looks of it. What is there not to like about it? You should feel fortunate to have somthing that nice. I wish mine looked as good. But since you ask for suggestions here is mine.
The only thing I would CHANGE on it is the transmission. An overdrive would be the first thing to get for it and maybe install a good AC system, if you don't already have one in it, if power tour is one of your goals. As far a comfortable interior. If your seats are all vinyl, then just have an upholstery shop remove the covers and have cloth inserts made into them in the exisiting pattern either in black or red fabric. I would do at least those three upgrades and you should be good to go. Unless there is somthing actually broke and need of repair elsewhere. Spend only what you need to spend on it and don't tear the whole car down changing things just for the sake of changing them and fixing what isn't broken while having it laying in pieces for years. Like I said, your car is already nice. Drive and enjoy.
The only thing I would CHANGE on it is the transmission. An overdrive would be the first thing to get for it and maybe install a good AC system, if you don't already have one in it, if power tour is one of your goals. As far a comfortable interior. If your seats are all vinyl, then just have an upholstery shop remove the covers and have cloth inserts made into them in the exisiting pattern either in black or red fabric. I would do at least those three upgrades and you should be good to go. Unless there is somthing actually broke and need of repair elsewhere. Spend only what you need to spend on it and don't tear the whole car down changing things just for the sake of changing them and fixing what isn't broken while having it laying in pieces for years. Like I said, your car is already nice. Drive and enjoy.