I-Beam or H-Beam

FABO'ers,

What would you recommend for my build? 340/416, Eagle forged crank, Ross dish pistons, now looking at ported J-heads and small roller mechanical cam, like Comps XR280R, 242/248*@.050;.57/.576. May switch to Eddy heads down the road; planning on 9.8:1 with the J-head; 10.5:1 with the aluminum heads.

I ordered the Eagle SIR full floating rods, which are supposed to be good for 500 hp/7000 rpm. I figured I'd be safe since I don't plan on revving this engine that high. Now I'm wondering if I shouldn't get the H-Beams. They are more expensive and I think may require some block clearancing.

The pistons are back-ordered so I can change the order if I decide to.

Don't have the car yet, planning on an early 70's A-body with 3000 stall/3.91's.

Opinions, please.