Hello. I dont know donkey about motors. I am looking to buy a mid 60s f100 to learn things. so if this is too ignorant of a question for this board i appologize in advance.

main question. all 3 trucks (1965-1966) i will be looking at have their (said to be) original stock 352's in them. or close to stock.

from what i could find about the 352's (aside from most people here think they are not worth messing with) was the HP difference between the 2bbl and 4bbl versions is almost 80HP?

so - and nothing is too obvious here - what is the difference between the two? i realize they are more than likely all 2bbl (i have asked the owners, and no one knows) but obviously everything else equal i would buy a 4bbl over a 2.

if i wanted to convert a 2bbl to 4, would i change: exhaust, headers, manifold, carb? does it have to happen all at once? i mean, could you do exhaust and headers first, then manifold, carb later? can this be done without yanking the motor?

i have been looking at trucks pretty hard for a good while now, and nothing in that era truck ever pops up with anything above a 352 in it. i would be way more than happy with 325-350 hp, so i think the 352 is good for me. i am basically just looking to get my hands dirty, and learn what makes and engine run, and eventually really be able to understand them. but i want the truck to have some balls too. so if the 352 doesn't cut it, i would get a bigger FE and tear it apart and rebuild it, and swap when it was done. that is ultimately what i would like to do anyhow. but i want to start on the 352.

all 3 trucks have a 3 speed column shift. anything else to look out for motor wise when looking?

I really do appreciate it.