Ok, so i got some pics now of my 10" speaker mod.
As i was saying earlier on this thread, i used the same baffle board but the cutting part has a twist to it... you need to make a straight cut just under the golden-metal-thingy that goes across the amp (and holds the grill cloth on the top side).

Here a comparison of the stock speaker:


The baffle board once it's off the amp (very simple to take off):


You have to take out a lot of staples... they are fairly easy to take out with a thin flat-head screwdriver (or a knife):


In this next picture you can see were the screws are to take out the baffle board (you can also see some fungus from the humidity at home... yikes!).
The white-poorly-photoshoped lines indicate the way i had to cut the board in order to fit the seaker:


One last thing... the speaker magnet does touch the amp's chasis once it's in place.
Hope this is helps.