You're not building formula one engines fellas. 25g is nothing, it won't be felt, it won't be even be quantifiable. I had Pauter X Beams in my last big power engine they weighed a hefty 593g each.
With a GT35R on it the car saw 1.8 bar at 3800 rpm and revved through the 8000rpm without issue. It was very responsive.

If you're worried about rotating mass then look at the savings to be had from lightweight flywheels and crank pulleys etc. Worrying about 25g per rod is absolutely pointless.

I recommended the H-Tuff for a reason he should stick with those.