the minimum. drill the block for a 1/2" pick up tube. a high volume oil pump with the black spring and a deeper pan with a windage tray. the windage tray is different for a stroker crank than a stock one. its deeper for rod clearance. full groove main bearings and a hardened tipped pump drive. these parts can support a lot of power. they are bread and butter mopar parts that have been used for decades because they work. a word of caution on the 440 source parts. several friends have bought their parts. you get what you pay for. yes they are the cheapest out there. the machining on the cranks were less than impressive as far as tolerances go. some needed to be reground. just don't throw this together. you need to check tolerances on anything you build. some of the bearings had tolerance issues also. just because you increase the stroke doesn't mean you end up with a short rod. moving the pin on the piston upward allows for a longer rod.