Technical Split Ford Flathead 6 Manifolds

Hi All,
I have a Ford 226 flat 6 and am looking for a place to have the exhaust manifolds split. A while back I was at a website that did this work, now trying to remember where that web site was. Anyone know of qualified folks that could do this work?
Thanks, Steve

 

I’m not sure what’s available for the Ford, but I found it about a wash to get an aftermarket dual exhaust manifold vs having it split for my 235 I had.