Does anybody have a part number for a type 1 P226,229 SAO trigger bar.

Type 1 have the pin in the bar.

Type 2 has the hole in the bar.

Are you looking to order one? Your best bet would be to call SIG with your serial #. Part numbers can change over time. That's why the armorer manuals don't list part numbers, just part names.
603-610-3000 option 1

I want to replace the type 2 w/a type 1 to facilitate a curved trigger.

The DEI Sig CS rep suggested to purchase the trigger bar from Numrich.