Can i use my old head with my 72cc kit?

[Kimcofan]

Scince the new head doesnt have the pressure line on it can i use the old head with the 72cc kit i have seen on posts that people have done it, but i want to make sure, it looks like its almost exactly the same.
Also what is the best way to set my timing?

[Shaka]

This is a really good question for the scooterinvasion.net forum!  Those guys are real quick about getting you answers as well!  I saw this question recently posted on there.  I believe they recommended using a new head designed specifically for the 72cc kit.  It is difficult to get the extra needed fuel into the larger displacement engine with the stock head!  Think of it as "you can only move a certain amount of air through a small straw".  The engine may run, but you won't be able to get the additional performance out of it!