Hanging the reel is no problem, and it can be used from either side which makes domestics real easy from kerb side. Its easier to reel in as you can stand up, not bend down over the reel like on the rear. I had a frame made which is bolted to the ceiling. In fact I bought the van and had the system fitted by Varitech. I think they did a good job, its a joy to work from.
The system is set well back to give me more space for my carpet cleaning gear etc up front. The fitted system is a 500ltr DI only. Its well with in axel limits and as the van has intelligent rear suspension the ride is always level as the tank empties.
The van is ply lined and I drilled 2 large holes on each side and fitted two extending shower poles, which I covered with pipe lagging and tape. Is nice as you can rest many poles on it.
The Van is a Citroen Dispatch LWB 2.0 diesel.
Hope I covered everything