My Z06 cam tune was a snap. Although it might be alot different with your car since I have a truck. The 5.3L's tables look VERY similar to the LS6 base tune now. The VE changed dramatically and takes an almost identical shape of the vette base table. The MAF values are also very similar. As for the spark, I just based mine off the stock 5.3L truck timing table, since I still use it for truck stuff, offroading, hauling, etc.