340 advice

I'm just about ready to install a 340 in my 1965 b body.
Car has power steering, no AC, it has manual disc brakes up front drums out back.
The motor has a little hotter than stock cam and a high rise dual plane edlebrock intake, but thats about all the mods that have been done to it. I need recommendations for carb and ignition/distributer.
Also, looking for headers for this application. Will I have to have them custom fabricated?
Thank You in advance.

PS
I dont need to be told that I should be putting a 440 in the car. I'm working with what I have.
That will come later when my budget can handle it.
At that point I'll be selling the original 273 and trans and the 340 and trans I'm presently installing and a spare 340 block, crank, rods and pistons.
(If someone wanted to swap all my small block stuff for a ready to install 440 or 383, send me a message, lets talk.)