How to ... 91 cams in 95 240sx

Hi there,

           I was wondering how many of you tryied to 91 cams in there 95 240sx. I know that the 91 cams a more aggressive than those in the 95 by 16 degrees if I am not mistaking. I was thinking of doing this mod that doesn't cost a lot and can give a 5-10 hp. Anyone knows the hole procedure ? I guess I would need to change gaskets and some other parts to accomodate the cams. If any of you DID IT, not just heard about it, I would like to know how you've done and if any problems came out once you did that. thx