If you are going to put new crank rods and pistons in it, you can build the 383 for the SAME money! Look at Scat parts. Nice stuff for the money. The cast crank is under $200. Fine for your power level.
THANKS TO: A&M Machine and Fabrication, CCTek (http://www.candctek.com), Hermance Design(www.hermancedesign.com), Paradise Road Rod & Custom, Harry Opfer Welding, Wegner Automotive Research, Clayton Machine Works