I recently got the jammin pbs conversion for my buggy. It feels like I've gained some more steering which is always helpful. The quality of the parts are very nice as well.
There's two sides to every schwartz, he got the up side and I got the down side.
I thought about getting this conversion kit fot my jammin. But i was'nt realy sure it would make a difference. My buggy seems to have a lot of steering with the original setup. your buggy looks great .