Yes it was a standard size pipe I found in the scrap bin at the local steel sales joint, was many years ago and can not remember the size right now, maybe 32mm, I may have a bit left laying around I could measure up for you.
That's ok, I am after a pipe that would fit right there here in Brazil, made a few phone calls but no luck so far, will stop at a shop and maybe a scrap yard, if I can't find one, I'll have to grind the inside of a water pipe to fit there, just some more hand made work, part of the fun of having these cars...