Here is the mild 383 build I built and ran in my Dart back in the 90's. It was a stock bottom end and I mean stock pistons and bore as I knurled the stock pistons and file fit them for .002 piston to wall clearance and used .005 over rings. Stock crank and rods. I honed the cylinders with a rigid hone a few thousanths over so thats why I knurled the pistons and used .005 over rings. Ran the old MP .484 cam in on a 104 ICL and used stock rockers I shimmed for the right lifter preload since I had decked the block and milled the 452 heads for a true 9.5 comp. 452 heads with stock valves and a little bowl blending. RPM intake and a 750 DP. CPPA headers and stock Mopar dist I curved and used the orange MP ECU. It was a 727 with a TA tight 10" converter and a manual valve body. Had 3.91's in it and used McCreary G-60's. It weighed almost 3600 lbs with my 180 in the car. Ran a best of 12.31 @ 110 on 92 pump and was a very nice driving car. My son still has it but we put a 400 in it as it runs mid 11's with the 400. Ron