i have a 1965 chev c20 and i am considering droppinng a new motor in it.im considering a 283 305 or a 350. i wana keep it smallblock so i dont have to swap trannys. any suggestions on a good reliable/affordable motor?

350 is always reliable and easy to get parts for you might have to modifay the bay to fit it im not sure but a 283 is good and fits.