I struggled with the same question and eventually decided on an aluminum AST, even though I had heard some stories about aluminum ones breaking (and killing engines). Those people seemed to agree that the pettit was better quality.

 

I would think you should keep the AST, it's there for a reason. I have the Pettit.



Tom





P.S. It's an easy mod.

 

That's good to know.. because I'm probably going to go with that one.