Edelbrock TM7

If they are running faster than you and have similar setups......Then consider their advice. If they are slower.....well....then they only know how to go slower....If they are close to your numbers running obviously smaller cubes/low buck setups....they might know something.....trust your gut. 10.40s is pretty respectable if you ask me. Low tens high nines is pretty serious stuff. I'm with the others....leave it.