Anywhere to buy these from

Mdf and jigsaw from bunnings :)

Nowhere currently sells them. You will need to follow Woobs advice and make some out of MDF.

im not to handy and i already have a jigsaw. so just buy mdf and follow some guides on the forums i gues.

are the mdf baffles really worth it over the stock plastic one

http://www.ebay.com.au/itm/6-Speaker-Adapters-Mitsubishi-Diamante-97-01-Front-/310218845504?pt=LH_DefaultDomain_0&hash=item483a7bed40#ht_1719wt_901

found these i know that the diamante is the same car, american model?

IMO, The design of the magna plastic baffles I already quite rigid, and really, the point of a stronger baffle is to stop any flex in the baffle when using high powered speakers (that play low) as any flex in the baffle will negate potential gains in the punchiness and bass delivery of the speaker..

Now, this only really shows a benefit when the rest of the speaker enclosure is without air leaks and flex, which doors aren't. You can reduce the acoustic inefficiency of a door cavity by sealing holes and adding mass to panels, and only after doing this would a stronger baffle start to have any real effect, in which case you could simply add mass to the plastic baffles to make them more suitable.

Personally I would only bother making entirely new baffles if you are trying to fit a different sized speaker into the door, like I have with my 8" mids.

These diamante adaptors would be good, except for a hard core install, I saw some 6" or 6.5" in a magna door and they could have done with a set of these, the speaker holes didnt line up and didnt secure properly in all 4 corners,
but the question remains, do they fit????? Only one way to find out, Its only $20.00....