Mine was first dipped at SPL, metalwork completed, need to organise second dipping and ecoating.
Have seen alot of cars that have been ecoated, particularly classic Porsche, the company that restores them have always been very happy with the results.
Mine had severe corrosion in 2-3 seams that the initial dip did not remove, it was quite dense and compact, the process didn't manage to get to it. These seams were unpicked and corrosion removed manually. Otherwise very happy with process. Would recommend that you have plenty of drainage holes. As I recall (best to check), for the dipping the shell goes in normal orientation, fro the ecoating it goes in on its side, therefore, different drainage holes required.
I also knocked up a frame that connects to the rear beam to body points and bolts through the chassis legs under the front passenger compartment. Whilst they try to be careful it adds additional protection. It also has detachable legs with wheels that makes transport/movement easier.
If you do a search there are a few mentions of SPL on here.
Is the CSL a recent acquisition?
JP