Hi Trevor,
Someone mentioned my website
www.preservedaxisaircraft.com as a source of information on preserved V-1s. I hope it is usefull for you.
Also, do check out the relics section, the section for not complete aircraft/objects. Some months ago I had the opportunity to see and take photos of remains of some 4 V-1's that landed in Sweden during the war - from Pennemünde. They haven't been listed anywhere before - as well as no photos published.
In the engine section you will also find photos of a preserved engine.
If you can add or correct any information please let me know!
Best wishes
/Mike
www.axisaircraft.com