Most of you should be aware of that 'Young Dudes' version of Whatever that the band did live from time to time. This was on the original recording of the single, but was removed because of copyright issues. Anyone who has the Safety Masters copies can hear the backing vocals still on the 'TV Track' instrumental, and there is another track there called 'No Young Dude' which doesn't have any of the vocals, but I think does have the extra instrumental piece which was edited off for the final release.
I've managed to find the alt.music.oasis thread where a clip of this version was posted a few years back
Thanks for posting this deadman. Like you said, hopefully someone may be able to track down the promo cassette with the "young dude" version.
As an aside to this topic, I recently added an article to my site, which is a comparison by TomS of the mastering of the released versions of Whatever to the unmastered mix on CD1 of the safety copy of masters set. From that comparison Tom noted that 20 seconds is cut from 4.25 into the track for the released version, & of course the intro is unedited on the safety masters ("alright? After four..." ). Hope this may be of some help. The unmastered mix is also a lot more dynamic. www.oasis-recordinginfo.co.uk/?page_id=1158