Norm,
 
You would want the Sonic N-Vader kit. Please read about it and the boomer on the respective pages of the web site. I won't repeat all that info here, but the N-Vader is the best choice for a couple of reasons that are explained better there. Just click into the Headsets and then the individual pages for each type to see the recommended application and specs on them.
 
Also, for general inquiries, it's best to just email me or send a help desk ticket since I don't always monitor the forums. These are mostly for customers to exchange info. I do monitor the helpdesk and email constantly, however.
 
Ed
 
Ed