Pontiac Firebird 1967-2002 - slp cold air kit and jaam ram air together??

So my car already has the slp kit but I had very good experience with the jaam kit so could I use both of them? I kno the slp kit is supposed to have the box sealed but would it hurt if I sealed the box to the hood and left the slp kit on?

http://www.ws6project.com/user_stor/catalog/98-02-ls1-jaam-ws6-ram-air-kit/ thats the ram air kit im talking about