What do you have in mind. Street car, show car, drag car, street and strip. Hard to say unless you let us know which way you are leaning.
Post up some pictures would help. If you just want a street car...I would leave the motor stock. Might not be much "fun"....but it will be dependable and easy to work on and maintain, especially if you are a beginner or novice.
V8,AOD,4.11 9", Cool paint, shaved doors and trunk,sport mirrors,RC Motor sports front rack, Aluminum Radiator. Oh and a Distributorless ignition.
drop in a roller 5.0L/C4 package and call it a day As much as I love the 6 bangers, they just cost WAY too much to hop up.