FS crystal 455kHz filter 2.4 bandwidth
 

I have a JRC CFL-251 crystal filter that is 2.4 bandwidth. I believe it can
substitute for the Icom FL-44a filter. seems to be the same size and specs
(might even be the same, who knows) $99 plus shipping

some info is at: http://www.universal-radio.com/catal...rxvr/0345.html