I have a 5.3, ls6 cam, Radix, 4l80e in my toyota 4x4. I want to get this thing running decent this weekend before it goes for exhaust( drop off Sunday night). My PCM is from an 02 avalanche 5.3, 4l60e os-12212156. I found a tune on holdencrazy for a 99 5.3 Radix with an 09379910 OS. Can I flash my PCM with this tune? Also I could not fine a tune that included a 4l80e with that os to do a segment swap with. I found one with a 12212156 os. Not sure how to get started, but I hope with a little kick in the pants I'll be well on my way. Thanks in advance for any help!