Guys Have to rebuild the 320 in my 46 Roadmaster. On teardown, found the head was warped in the center( broken exhaust manifold) only 2 valves had any seats- rust and carbon- and # 8 had broken piston above the top ring land. since it is apart, thought I might upgrade, if anyone has these parts or a complete engine, let me know 49 up connecting rods so i can use insert bearing 46 are babbit 49 up rocker arm shaft and pushrods, so i can use hydraulic lifters any leads would help, ill also take a complete engine, cracked block, seized, anything i can steal the parts from have tons of nailhead parts to trade, 364 and up both dynaflow and st 400 cranks any help would be apreciated. 320 engine from 49 to 52 will work