can 6x9 speakers be fitted in a mk1 door?

[mycool]

I have a 1998 mk1 and want to upgrade the speakers in the doors. I have a set of good quality 6x9 speakers that were in my old car on the parcel shelf.

Can these be fitted in the doors to give a better sound than the standard units, and if so how big a job would it be?

Thanks

[mycool]

I already have a set of 6x9s left over from my old car so wont be spending anything. Is it just the speaker mount or the aperture in the door that is the issue?

[mycool]

Cheers - i'll take off the speaker grill / door card and have a look. Don't like the sound of cutting bits off the door though!