Exhaust Question

ok im tired of fighting with myself, so i turn to you guys for help

i have a 73 318 duster stock block, mild cam, headers, intake, 600 carb 3500 stall and 410s in the rear right now it is just a street toy, im going to get exhaust on it this week and im having a hard time tring to figure out if i want 2 1/4 or 2 1/2. It is going to go from the headers to a H then a set of super 44's then to the axle and turn downs.

any help please, and i know it is kinda a stupid question but i have been killing myself over this (dont ask why)

anybody have the super 44's yet......what you think of them

and i think i might go with the mopar mech fuel pump 80 gph @8.7 psi

criticize away

P.S. im looking for a set of J heads if anybody has any in or around the stl let me know

thanks
Tim