Hi Mnm,
Sent u a PM to call me - but anyhow, I had a really, really, really good close look at the MCW60-R (Retail) version. Looks like you will be alright as the G80 adapter plate is definitely listed as being supplied.

I originally ordered the MCW60 (non Retail version) which didn't include the G80 plate.

Quick check, Cool-Z have these in stock but not the G80 Plate by itself so looks like you are good to go - have fun this weekend. more piccies expected as well of-course