i was gonna get the 404 big bore from vitos 850 bucks NCLUDES-POLISHED HEMI HEAD WITH 24CC PUMP GAS DOMES-RH & LH CYLINDERS-NIKASIL 68 MM BORE-FORGED PISTONS-GASKETS-HEAD STUDS-LOCATING DOWELS-COOLANT PLUGS-PERFORMANCE PORT TIMING- TRIPLE EXHAUST PORTS--CAN BE USED WITH VITO'S PC3504 4MM STROKER CRANK FOR A SWEET 421--SEE CY421FKLR FOR 4 MM STROKER LONG ROD CRANKS is this a good thing to do or not and one more thing i put my stock carbs back on and it doesnt run very good its a lil better but didnt fix it im still running rich i think