I removed my WCP MAF today and it is definatly a 032.
Yesterday I received a new MAF from
http://www.airmassmeters.com/
It came in a sealed Bosch box and the part was the housing and the sensor which is marked 029. I paid £140.00 including VAT and 24 hour Postage.
Just to make sure that there is a reduced chance of contamination of the new MAF im going to give the air filter unit a good clean out.
If it wasn't for this dammed rain it would be fitted by now!
Justin