We have a stock bottom end YSi automatic trans car that made 808rwhp... That's somewhere in the 880-890 range on boost in a manual trans? Done plenty of 750-800+ rwhp manual trans cars with stock bottom ends... Up at those levels its all about tune, and octane. Don't get me wrong mechanical parts can still fail and in that range you should know that it can happen, but do everything to prevent it (TUNE AND OCTANE)
We went 9.87 @ 136.5mph on stock bottom end with a base ECS SC kit, Alky methanol kit, ARH headers, Pfadt suspension, and a ECS BB cam; Full weight, heads never been off the car.
Motor is still in use, just not in this particular car. No problems at all
