Newbie needing answers!

welcome guy! I would suggest you start reading a lot of posts on here for a start. there is lots to learn and if you stay with this hobby the next 20 or 40 years you will still be learning!
as a hint, these HP numbers are usually bench racing figures your GM and Ford buds toss out. I say get in touch with Tidewater Mopar club down your way, make friends with some members, there, get some real world experience in one of their cars. then decide how many ponies and $$ you want to spend.
value of these cars? anything over salvage price is " salesmanship"! good pics and info posted on here will give you some arm chair appraisals.