There are 4 basic "kits" for 07's 103"

The stage I - just the BB kit with flat tops
Stage II BB kit /flat tops/SE 255 cams
High output -BB kit /flat tops/SE 258 cams SE perf heads (72cc)
Super High Output - SE 103+ heads(98cc) /103+forged pistons/comp releases /257 cams - some show 50mm TB/"free flow exhaust"
HTCC CNC ported heads(84cc)/HTTC pistons/comp releases 264 Cams / 50mm TB/free flow exhaust"


Looking for more torque I've checked a number of sources and I'll be going the Super High output route with 251 cams and either V+H pro pipes or Rinehart 2 into 1

 

In case anyone is wondering... I was finally able to get a definitive answer (somewhat) from the dealer. The 103" kits are supposed to be available Nov 15th.