Vintage Simmons Drums (UK) Users Group

I recently found a few SDS 9 pads and a SDS 800 module. Im wondering if 
its possible to get sounds from other drum modules ( roland handsonic) 
to the SDS 800, this way I could trigger them with the simmons pads. 
The only problem is, the MIDI on the SDS 800 is 8 pin while the 
Handsonic is 5 pin. Is there anyway I can trigger them with the pads?