For what it's worth, I compiled a quick unofficial list of stats for Speedweeks by Chassis.
Feature Wins/Podiums/Top 5/Top 10/Lead Lap Finishes/Heat Wins
Longhorn - 6 - 13 - 17 - 34 - 42 - 14
Rocket - 4 - 12 - 18 - 29 - 42 - 12
Bloomquist - 1 - 6 - 9 - 16 - 21 - 9
Capital - 1 - 1 - 1 - 1 - 8 - 3
Black Diamond 0 - 3 - 10 - 25 - 46 - 3
Barry Wright 0 - 1 - 2 - 7 - 13 - 1
Victory - 0 - 0 - 1 - 3 - 5 - 3
Swartz - 0 - 0 - 1 - 2 - 5 - 2
Pierce - 0 - 0 - 0 - 1 - 4 - 0