Slabside/gsxf exhaust options.

[bigpants]

Hi everyone. After my 1100j got nicked a few months back I thought I'd never be able to afford another one but I got lucky and bought a real cheapy in dreadful condition to rebuild/restore. The exhaust on it is completely shot beyond repair but a Google of the engine number reveals it to be a gsx1100f engine in the new 1100 slabside. So , what's my best option for an exhaust ? I can modify brackets and to a limited degree pipes and or bends but which headers will fit the block , clear the sump ? And which exhausts will run best ? Any advice much appreciated.