damn near bullet proof. here`s the story, went to the southeast Z shootout in GA. while there, due to over zelous boosting, i pinged something. she ran a little rough but she ran. ran from the middle of GA to Tampa, thru JAX. i finally pulled the motor apart today, here`s the list
1 spark plug missing ceramic
1 spark plug missing electrode
1 piston with a silver dollar size chunk of skirt missing
1 piston with a broken ring land
1 piston with a cracked ring land
1 piston with a broken ring
24 mpg, 180*, 85 mph most of the way. i love this motor