Engine mount welding on aerox for carb placement

hi guys , im currently in the process of a complete race tuned engine , i was looking at buyin the manifold that places the carb over the back , i noticed theres engine mount plates that are available but iv read about altering the bar that keeps the mounts rigid does any 1 know as to where or how the procedure is gone about doing it any help would be appreciated , or pictures of aerox's that has this done thanks