Motronic brain for 84-86 Carrera 3.2 needed

[sgerken]

I am hoping to rent (for a week) or buy a US Motronic brain for my '84 ROW Carrera 3.2.
After 39 years of passing smog, it doesn't pass.
BTW, the car runs awesome and it only has 1,000 miles added since the last smog check that it passed. So I am hoping to try a new brain. Anyone?