seriously,with the parts you mentioned you already have,a fresh rebuild on your shortblock with a quality set of cast pistons(if it needs boring),freshening of the heads,a comp cams extreme energy series cam and springs,and you will have no problem getting your car into easy mid 13's and faster. and that is on a "budget" .a normal working guys budget (that covers 95% of the folks definition of budget on here)
not jay leno's budget.
if you really think you need stealth aluminum heads,an expensive stroker package,a super cool quench build,etc,etc, to put together a good,solid,relaible,budget 383 to put your car in the mid 13's.........please,please,please stop drinking the bong water......