Here's a guide: MINI R5 /R53 Buyers Guide - MotoringFile
The '05-'06 facelift cars are often considered the best for the 1st generation.
Check to make sure the water isn't leaking in from one of the sunroof drains if it has a sunroof. Loose drain tubes are a known problem and it would suck to replace the antenna mount and have the headliner get damaged again because it wasn't only the antenna mount leaking.
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BlimeyCabrio Oscar Goldman of MINIsLifetime Supporter
- May 4, 2009
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As for the headliner, recover or replace is your best option. You can get a replacement from someone parting out a car, post on the various MINI Facebook groups. MINI Exchange is a good source.
To recover, you can get real headliner fabric and glue here: Your Auto Trim Store
That's where I get stuff for all my interior projects.