I have a 302 bored to a 310 in my 65. Heads, intake cam, carb, ignition exhaust, rearend, gears. What are some other "quick" upgrades I can do in order to make it faster?? I have a friend who I beat by about acar and now he talking mad crap that he will beat me if we race again. He's willing to put up $200 to my $100. He's so confident so I think he might have something up his sleeve??? What can I do to keep the win??

He`had a 1970 chevy truck with a 350 in it. Not new heads but head work, cam, carb ignition, and the same gears (3.73's) He's completely gutted too......any thoughts???