Used Vortech: Parts that must be included?

[Armydad]

Hi all,

I may have a line on a vortech,used, what parts MUST be included with the deal. I am sure there are parts that I can get later ,injectors for example. But how about the tune ( or computer module), brackets etc. I just don't want to get a good "deal" and then find out it is useless because I didn' get the correct tune or computer module .

Any help is appreciated