Recent bought two incomplete Eberspacher VW gas heaters from local guy - plan is to use one in my CMC Speedster when I move to T4 engine w/out heater boxes. Have a BN4 from Thing and the smaller BN2 from a bug. Each, of course, is missing some parts. Those parts have to be lying out there somewhere! Need following: for BN4- electric fuel pump, electric switch/pull knob control valve control; fuel tank connector and maybe ducting (have the elbows at either end), exhaust pipe; for BN2 (later model) need intake duct and outlet duct with the control valve, switch/pull knob valve control, gas/water separator, exhaust pipe. Know there are couple guys on internet that service and sell parts but not that desparate yet. Been looking on eBay and the SAMBA too. Will consider other parts for spares or to use for trading (yet to test the parts I have!). Leaning towards using the larger BN4 behind the rear seat ducted into the body's heating channel/pipes and selling off the BN2. Both cleaned up nicely.