Hey, welcome to the site. Now that you have the 289 torn down to the block, it's time you took it to the machine shop to have it tanked and bored to 0.030 over and have 0.030 pistons put in. Your choice about going with original parts, and I suggest that you do, unless you want to spend a ton to make it a hot rod. There are some things we can suggest if you do decide to heat it up. As far as the body and interior, there are also various levels of resurrection you can do. The more you do, the more it will cost of course. If you can do most of the work yourself, you will be money ahead. Again, welcome to the site, and if we can be of help with specific questions, don't be afraid to chime in.