I basically want to cruise around town and when I feel to lay the hammer down I can. Take it out to the track once in awhile.

Im running around 450 horse. He is a main guy in the drag racing scene around here and runs 3 fully mod'ed car and 3 junior drags. So I take for granted he knows his stuff but i'm always open to look at other idea's. He says I should change because: I have the ability and the help to do so. Change it for more modern parts and more options of parts. And I would love to have posi.
My tranny is alsdo built strong with a 3500 stall and shift kit and stronger bands...etc
What do you think?