I have the Crane 'Fireball' PS-91 coil and not only is it a drop-in piece, it's a much hotter spark than the stocker with no negative effects. My plugs are cleaner than ever with no problems on an otherwise stock ignition.
According to the Crane website,
http://www.cranecams.com/ignition/lxcoilsacc.htm
The PS-92 has about 20% more power and shouldn't hurt anything. Go for it.