LS Swap...5.3 ECU to control 5.3/4l80 or, 6.0 ECU to control 5.3/ 4l80e...Thoughts?

[MercRising]

I'm swapping a 5.3l/4l80e into a '72 C10. Currently I have the 2005 VIN "Z" L59 5.3l/Harness/Computer etc, which is built to control the 4l60e.

I plan to run a 4l80e here b/c boost will come into play.

My question is, can you all chime in on which makes more sense?

1) Convert the 5.3l harness to control the 4l80e and also make the tune changes on the 5.3l ECU to run the 4l80e or.......

2) Get a 6.0 harness/ECU to run the 4l60e and then tune the 6.0 ECU to run the 5.3l motor?

In way over my head...it's pretty fun!


John
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