what are the strongest gear's I can buy?

I truly believe this to be a fact. After you go below 11.5 and your launching hard, you best be putting a new set of gears in a 8.75 rear every year at the start of the season. If not, your going to break them. You might get away with a season and a half, or two, if you don't run every week, but it is going to happen. Just bite the buillett and spend the money for the new gears, and keep your car running. I see this happening all the time.

Earl