I have been speaking to this guy on the Meganesport.net...
This is the only 1.9 DCI Rep in the UK with 225 alloys (Adapted fitted, the photos previously are his) 20mm
i just read the thread. no offence but that guys mate must be a doosh for selling those adapters for £50! i didn't think it would be this rare for a dci conversion. i live in the midlands of england, mine is a 1.5dci so i guess it would the only one if i get it done as his was a 1.9dci which is no longer sitting on those beautiful 225 alloys. what spec is your megane?
£330 is a lot but i am tempted, i definately want those alloys on my car. it is basically the car in this thread "https://www.meganeownersclub.co.uk/forum/viewtopic.php?f=13&t=12670", same colour and kit, different alloys though. i have however changed the front grills (either side of badge on the front) to the 08/58 plate ones as my car is an 07 plate megane.
the only thing that i don't understand on that website where you can order the correct adapters is where it say "wideness either side." the other measurements i can figure out according to the info you've given.
in terms of making the adapter, as you said that is easy, and as far as teh bolts go, i'm sure that they can be bought the correct size, if not then some larger ones can be modified as they would be standard parts.......unless of course they are made of some special metal.
what do you think the adapters are made of.....some are stainless steel....some are alu.....