The port widths are the same on both engines. It's just the height that is different. The port size in my plate is exact size as 2.3 intake port. I could make a TB adapter plate but I didn't want to leave all the 2.3 charge plate solonoids not hooked up and throwing codes.It's hard to tell from the pictures, but what is the size difference on the ports on either side vs your adapter plate? The holes look small, but I can't tell if it's my imagination or not.
Also, just an idea since you're able to create things like this.... what do you think about the idea of using the 2.5 manifold and creating an adapter plate for the TB instead?
My plates are 1/8 thick. The plate ports are exact match to 2.3 intake. No need to touch it at all.How thick are your adapter plates? Ideally id like to port match in a attempt to correct the issue if possible. But that really depends on how thick the adapter is.