A different Q on 340 Vs 416

Still far from sure on where to go with my build and are mostly benchracing here,but here is something i have thought about.
What i have is a 73Duster With PB and PS (the last two things might change before this is done)

Weight last it ran was 3185lbs with me in it and a full tank of gas and a bunch of tools.
It does have subframeconnectors
904Transmission
32-3500RPM converter(i cant remember) its very nice and tight.
RPM Airgap manifold (also have a Edelbrock Tunnelram)
800cfm Edelbrock AVS or 750Proform mech secondary carb
Some very nicely ported Edelbrock RPM heads but still with the stock 2.02/1.60 valves
TTI 1 7/8" headers.
Comp XE 280R a small solidroller camshaft with 242/248 @.050" and .570/.576 lift

Here comes the real question the thing has a 8 1/4" suregrip rear with two available gear ratios.
I have a fresh bored 340 block that is .030" over with two fresh forged stock cranks just sitting and i also have a set of Eagle H-beam rods and would aim for about 10.5-11:1 or so compression on pumpgas.
Would you either build a:
stockstroke 340 with 3.91:1 gears
or a 416 4"stroker with 3:21 gears
With this bunch of parts?
Im sort of thinking that the difference in gear ratios would be equaled out so to speak by the gearing,except for idlequality that i dont find being much of a problem anyway.
For maximum performance the thing would obviously need more gearing with any of the options,but this is just fun car.



There are more options including a Lysholmtwinscrew and a E85 dominator but the options above are the ones that seems least stupid and wont eat blocks and drivelineparts as often.