Any recommendations for building a '73 340?

Shane65 said
You're right, tiddly winks it is... :D

I know its going to cost more than 2-3 to get it complete and in my car running, but I guess I was hoping to have just that much in the motor. Block, pistons, crank, heads, machine work

Then headers and intake manifold together for no more than 1000

other misc bits probably another 1000

Ain't happenin. You have only two choices for GOOD headers that FIT and don't hang low. Dougs and TTI. Though Dougs are a little cheaper, they are around 800. The TTI will be around 1000. If you backed off maybe to a 350 HP goal, you could run exhaust manifolds and the 340 intake and save some money, although not as glamorous.