Fenders bolt on with no welding. The only hard bit will be removing the cladding on the lower part of your door there to get to the bottom most bolt. But that isn't hard either.

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg