Ortol - PM sent with some info.
Beware what you get for your money, one of Camlobe's names kindly fitted ECi cylinders (having told us he always fitted factory cylinders as they were best - and charged us for the same). Result 6 engines with cylinders that have to be binned at 2000 hours, no 20%extension for those working motors - mandated by FAA AD - 2400hrs lost in one fell swoop...
As Camlobe mentioned - beware engineers saying go to one particular place. One company pays commission to engineers and guess who will pay that. Visit the companies if you can to see if they have the kit and the staff they claim to have, you'd be amazed!