Headers VS 340 manifolds

Thanks for the tips.
I'm also leaning towards the 340 manifolds. Its going to be a fun street machine just have to get the weather to work (im in michigan!) and drop the motor in.

She's a stock bottom end 318 (ran awsome before yoinking the motor)
Edelbrock 600 electric choke and Edelbrock performer duel plane intake. Comp 268 cam and lifters, Comp valve springs. Light porting/gasket matching done by myself and 20 tous shaved off the heads with thin MP head gaskets. and now I guess 340 exhaust manifolds with 2.5 duels into dynomax mufflers
All that mated to the factory 904 with a total rebuild and trans-go stage II shift kit and a TCI 2500 stall. 8 1/4 with 3.23s for now (3.55 posi soon)

I think the 220 60 R14 BF goodrich's dont have a chance ;)