I switched from a Tilton to an MSD in my Camaro. I broke the MSD pretty quick. I think the Tilton was better.

I agree with hammer, grounds are so important, also making sure you have copper cable instead of copper clad aluminum helps. Overkill in the size of the cable never hurts. I have also never seen a single battery in a bracket car do very well (overall) when cooling and running the car for several rounds. Even with a alternator it can work it past its limits. I use two batteries always and run a ground from the battery to the back of the block and I have had good success even with the Hi torque GM starters. Of course they are built by a local who cares what he puts in them too! No Auto Zone stuff here lol.