So I'm thinking...179000+ miles

[PortDawg]

Time to start planning for a motor swap at which time I'll do the clutch.

If I were to drop a LS3 or LS376 in it, do I need to swap ALL the wires and PCM or will it run on the current PCM.

Thoughts?

[Sneaks]

Not positive on this, but I believe you will only need to have your PCM reflashed and tuned to run an LS3.
Interested to see which way you go with this build.

[PortDawg]

I'm gonna start saving up for it. Will wait until the LS6 is hopeless.