thanks @Gar
I have an eisenmann on it now but originally had full m3 system and delighted with it and sounded lovely, i have the m3 box stored in the garage and dont plan on selling it as a clean one is hard to come by, only downside of the m3 setup is its too heavy, for me its would be bastuck or eisenmann all the way.
souhans are great and do good work but you really need to see what the finished box could look like as one i got before had too much gap between the pipes and didnt look right.