e39 535i v8 lpg conversion 2000 model

i have bmw e39 535i v8 got 4yrs ago project,did lpg conversion,new radiator water pump and thermostat,rocker cover seals inner and outer, all sensors done,recond the auto gear box by mackies glasgow,front shocks rear shocks springs and mounts,tires new ,alloys refurbed ,been on computer no faults mechanically sound,now only needs wheel arches attended to usual rust spots,dew to bad health now i have to sell,most work done by mechanic who used to hold bmw meetings once per year to put member cars on his ramps to check them out,drives like new. spent thousands on it ,nearly 2yrs warranty for gear box, looking for 3.500 pounds for it ,spent double that on it   cheers william,,mobile no 07766222481