Hello everyone, I'm ready or so I think I am, to throw my ls into my xtreme. I am having some second thoughts however after changing a few things. Unfortunately I'm short on time and need to get this running quickly so I don't have tons to spare searching forums. I have a 2003 6.0l block out of a silverado SS. I removed intake and am using cable driven the with slp ls6 plenum. Originally I was going to install a 5.3 02 tahoe motor. My concern is computer/harness issue. I sold the 03 harness and kept the tahoe harness due to using cable driven tb. Assuming I will use the tahoe (02) ecm, will i run Into issues with the reluctor wheel being Incorrect and causing a no start? Is there a simple work around or should I look for an 02 crank and swap before I slide her into her hole?
Also any other concerns you guys may have would be greatly appreciated, as typically time and budget Re in mind. Thanks -S10 on 22's.

 

Both motors should have a 24X reluctor so you'll be ok.

 

Thank you