witch rotating assembily due u guys recommend

im ready to buy a rotating assy. i can get a eagle rotating assy for 1600 at my local shop not balanced and it is a 505 kit with a 4.125 crank. or should i get the 440 source 512 kit.its a 400 block. also im going to buy a set of victor heads, due the max wedge heads flow any better than the standard port victors. it will be a street strip car.thanks for any opions
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