for the hat your best bet is a local hat shop or search ebay looking for a brown fedora
then you'll just have to dirty it up all depending on what look your going for film wise as they where all different.
sweaters are harder as most of the cheap mass produced sweaters are arse backwards and have a green collar, also they all tend to be very thin and always inacurate
David miller creation does the best part one and a decent pt 5 ( though not accurate) all depending on how much you want to spend your best bet might be having it custome made to your size and then you can get it accurate to any film you choose to replicate
hope that helps a little
I do have sweaters and hats that I could sell you but I'm in the uk and it would then also be a question of them getting to you in time and are they the right size for you
send me a pm if you need more info and I'll try help more