Fitting TTi headers on a 273

86E09AA5-D6E8-4804-9090-C19E23A1C4ED.jpeg 1FA3210F-A46D-45FF-BB7A-BE0320DC0113.jpeg Hello
Just a quick update.
I’ve welded my ports up on my new headers.
They are now machined on the face - so they are flat.
I’ve bolted each header to a piece of steel flat and tried a 0.002” feeler gauge under.
I couldn’t get the gauge under so they should all be good now.
Thank you all for your help
Mark