I've bought from Mini King, Karcraft, and Heritage MG with no problems except the boot seal 2 years ago (original sponge type). 2 I bought were too hard, and it would have taken 3 people to shut the boot..
I got a soft one from Minisport SA that was more like the original and worked fine.
The other places may have the right ones now though.
Here's a pic of the soft original one, and the hard ones that don't fit-
http://minisport.com.au/prod505.htm
[edit] you can also buy door rubbers by the metre from Grippy Rubber and others. It is the same profile as an XD Falcon..
_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
