rb head on a 220?

[Gone crazy]

Im intetrested in hearing if anyone has ever done just the Rb head mod on their 220 specifically and what they noticed. Was it a hugh difference or just a little?

 

[sr5bidder]

just do a search, I talked to Ron about doing it on my 200 and he said it was really not worth it for me but if I had a 220 I would notice