As said I would (highly) reconsider your cam choices. You have a 5000 LB vehicle and you need low RPM torque. Your actual SCR is in the 7's likely. You are already torn down to the bare block & I would rebore & get it in the 9's and you might be able to get some pistons close to what yours are now so no rebalancing needed & HF has a gram scale for that regularly on sale for $9.99 & it was just as accurate as my buddys' high dollar one. or even drop in some std ones if on a real tight budget. Some file fit plasma moly rings in an overhaul kit (bearings/gaskets etc). (you can file fit em with a point file).