You'll find a great resource in so many people here. They really are an encyclopedia of knowledge. You'll find there is no "easy" V8 swap, there are a ton of parts that will need replacing. There was actually a thread about this very thing right here. .
There is also a section for vendors, where a lot of people have chimed in. There are a lot of great vendors for specific parts, NPD is pretty good, but a lot can be purchased from Summit and other vendors that ship quickly and don't charge for orders over $100.
Don't forget to check other vendors like BOP Engineering amongst others.
Have fun with it! Drew
1957 Thunderbird 289 1967 Firebird Base 461 1968 C-20 327