I think that the systemax II intake would be your best bet. Dart windsors have a big intake runners that the systemax will compliment. This is just from my experence. I was using a systemax intake on a 347 and it would pull hard to 6500rpm with good torq down low. If price is a concern the trackheat would work good to. With the heads and cam you have you will be making your power up top so stay away from the smaller intakes. Good thing you have 4.10's you will need them!
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79 hatch w/ NA 347,stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system, proshifted TKO II.MY CAR
http://www.mustangworks.com/cgi-bin/...splay.cgi?1288
93lx all stock + tremec