23' Seacraft Weight questions.

[Squacha]

Does anybody know if the 1976 23' CC Seacraft is a heavier boat that other years? I've moved batts forward, cut out the livewell and the wall around the livewell and redone the aft floor with a foam core deck to reduce more weight but the boat still sits low in the back. Currently have 2 old Merc 150XR4's and will be repowering to twin Suzuki 140A's. I've heard of people glassing in concrete into the front to get the weight fwd but I'm not liking that idea. Looking for some more ideas - Thanks.