What starter do I use?

[projekt70chevelle]

Ok I have the Lt1 t56 on my 406 sbc and I have broke A LOT of starters. The autozone guys are starting to get suspicious , lifetime warranties rock. I am using the centerforce steel flywheel and I keep snapping the ear off the starter where it bolts to the block and I have even snapped the nose off a few times. I am using the same starter that would come on the 93-97 maro's/ta's I also have tried shimming and that has not helped either. I dont think my compression is to high I'm at 10.5:1...

Is it time for a high torque starter or do I have another issue?