List A

Traxxas Front Bulkhead $ 60
Traxxas Lightweight Input Shaft $14
Traxxas Lightweight Idler Gear Shafts $3.50
Traxxas Lightweight Output Gear Shafts $12
Traxxas Aluminum Bumbers $35
Traxxas Aluminum Tranny Skid Plate $16
Traxxas Aluminum Lower Braces $60
Traxxas Stainless Hinge Pins $12
Fast Lane Machine Shock Tower Front $23
Fast Lane Machine Shock Tower Rear $23
Fast Lane Machine Skid Plate Front $14
Fast Lane Machine Skid Plate Rear $12
Fast Lane Machine A-Arms $99
E-Maxx Screw Kit $24
RC-Solution Roll Cage (Silver) $99
Pro-Line Power-Strokes $140
Pro-Line 40 Series Mashers $35
Pro-Line 40 Series Velocity 6 $35
CVD Centers Silver $48

List B

Traxxas Front Bulkhead $ 60
Traxxas Lightweight Input Shaft $14
Traxxas Lightweight Idler Gear Shafts $3.50
Traxxas Lightweight Output Gear Shafts $12
Traxxas Aluminum Bumbers $35
Traxxas Stainless Hinge Pins $12
Fast Lane Machine Shock Tower Front $23
Fast Lane Machine Shock Tower Rear $23
Fast Lane Machine Skid Plate Front $14
Fast Lane Machine Skid Plate Rear $12
RPM A-Arms $40
E-Maxx Screw Kit $24
Pro-Line Power-Strokes $140
Pro-Line Badlands $30
Pro-Line Velocity Yellow 1/2" offset $30
CVD Centers Silver $48
Gorilla Maxx X-Brace Silver $190
Gorilla Maxx Motor Mount $42
Tekno Wing Mount $25
Pro-Line 1/8 Wing Yellow $12
36 giant ass bags of crisps $72

Does the Gorilla Chassis really help for jumping cause wondering If I should get the roll cage.