Holley vs Demon?

[TDW]

Thanks for the replies. Here's the engine specs.

1978 445 casting, 2 bolt block, line honed, ARP studded mains
Resized 3/8 truck rods
6223 GM crank
Fed Mog Competition bearings
.030 SRP medium dome pistons. JE file fit rings
Balanced assby
9.75:1 comp
Merlin oval port cast iron heads
Howard solid cam (245/252@ 0.50,587/578.110 lsa
Howard billet 1.7 roller rockers
Howard custom length hardened pushrods
Howard EDM lifters
World Products dual plane intake BG Speed Demon 750 mech secondary
Milodon HV oil pump
All ARP fasteners
GM points type ignition, set-up by MacNeish. 18 initial, 36 total, VA hooked up and working

Made 501 HP @ 6300 rpm,510 lb-ft at 4000 rpm

Eric, the Holley site also recomends a VS carb for the street, due to the weight of the car?