700rwhp N/A is going to be tough. 600-650rwhp is possible.
My car has Greg Good heads, 11.6:1 cr, 510cid, bellinger headers, HF cats, T&D RR and a cam that is too small (much like your stock cam) and a tune. I make a wimpy 555rwhp 610rwtq. I still have a stock fuel system, TB and intake...