I have a 59 impala with a 348 engine in it but the transmission has been changed I am sure to a th350. My first question is since it's already not original because the transmission do you think I should change the engine over to a 350 small block? The reason I'm asking is I have one that someone went through runs good and there are a lot of different options and add ons to buy for these engines right over the counter. My second question is what do you think my 348 is worth and it's a runner? Alot of people told me to leave it in there because it will be worth more and all that but I don't really like the look of the 348 personally. I've also heard others tell me and not referring to the engine just other things on the car that it's my car and do wha I want with it so tell me what you think.