Kevin_A i have not tried the full body isolation pads. In my 533 and 183 there is no extra room for anything but the fan.
The Sunon (Taiwan company) MF50101V2 is actually sold by Mouser ($8.92 in unit qualtities, $7.10 in hundreds, in yankee bucks, not loonies). So the fan itself should be OK. I go to Mouser (owned by Warren Buffet's Birkshire Hathaway, by the way) for most of my serious electronic parts; I use Amazon and ZWO when I don't care about quality or documentation.
Some details of the MF50101V2 can be seen here, but the direct link to the datasheet don't seem to work.
https://www.mouser.com/ProductDetail/Sunon/MF50101V2-1000U-A99
11CFM, 4800 RPM.
Sunon's web site has the datasheets, though.
http://portal.sunon.com.tw/pls/portal/sunonap.sunon_html_d_pkg.open_file?input_file_name=7264646F632F3230313730392F3236313339322F443035303539383630472D30312E706466
So, I ordered some of the FGA-50 fan gasket (and some FGA-40 for the smaller cameras) from Mouser to see if I can fit them in.
https://www.mouser.com/ProductDetail/Essentra/FGA-50?qs=PzGy0jfpSMuKBIN6X6mrug%3D%3D
ZWO's fan in the 2600 camera has multiple gaskets and rubber washers, so there might be enough space once I remove the ZWO crap and/or perhaps move the grille to the outside of the camera.
Chen