The tune doesn't change based on the pulley size.

It changes based on the MAF you're running, the cam, injectors and fuel.

There is nothing else to change.

If you're running less than 14* of timing, change the pulley, not the timing.

What I would suggest at this point is a compression and leak down test.

Just to see how your engine is doing so far and if there are any potential issues that you may or may not see when you get the heads off.