Try this place, they have everything. Communication is lacking but maybe you'll have a better experience than i did. KJBparts.comlooking for a used ignition ECU for 2.8L 18v. It cannot come from a 2.5. The car will run very lean at high RPMs and will develop unwanted problems.
I would avoid using KJBparts, there are many horror stories posted both on Facebook and in other forums.