there are a ton of resources out there for parts, and a lot of help and advice... but even still a bare hull you're probably looking at spending at LEAST 3-6k just to get it in floating running condition.
you either need to find a panther pump (getting harder to find...) or at least a panther suction housing to mount in there for an energizer kit. Last I heard JBP is poppin 2500 bucks for the energizer kit itself... or you need to pay someone to cut out the panther suction section in the hull and reglass in a bottom that can then be cut for a berk intake... it has to be done correctly. not something you probably want to attempt yourself. im guessing your eliminator already has a motor, gas tanks, interior will easily be a couple thousand for upholstery alone. i paid about $1500 for mine and its just a little 18, not a full daycruiser. electrical, etc. the boat probably isnt registered so thats another 100 bucks in due registration.
its going to be a long road ahead of you.
that being said... its something that Ive gone through with my boat. down to nothing but the bare hull. but i know *EXACTLY* what i have, and that its safe and reliable. even if you buy a full rigged boat it'll be a giant mystery and should be gone through regardless.
feel free to browse through my build thread and other threads in the projects section to get an understanding of how everything goes together and what it'll take. i personally loved building my boat more than driving it.
http://www.socaljetboats.com/projects/78-tahiti-project/