I have a 78 mustang but the engine as far as I can tell it's from the late 80s to early nineties. The manifolds on there are d5ze-9431-aa for the left and d5ze-9430-ag for the right. And they sit tight by the engine bay wall. I currently have side pipes running from the shorty manifolds.

I'm looking for a replacement header with the same dimensions so I can slide them into my current exhaust.

I'm having trouble finding anything. I even went as far as trying that new chatGPT which came back with a pacesetter 70-2224 shorty and a BBK performance 1772 shorty but when I search these on Google they seem to not exist.

Can someone please help me find replacement headers shorties that will fit my current exhaust? Thank you in advance