like it says. swapping to a carbed 355 and dont need the 305 anymore. its a factory gm replacement engine with about 30,XXX original miles on it. runs perfectly fine. will include complete engine from pan to throttle body minus pulleys as they will be put on the 355. still not entirely sure what to do with the computer and harness but they might be included as well. i might try and put some 350 heads on it, or if the buyer wants them i will throw them in with the engine and they can do the swap. the heads are pre-1986 so theyre not centerbolt heads. i dont have the swap done and i dont know how much longer itll take so im not in a hurry to sell just yet. anyway.....shoot me some offers.