Special Super Denise in A3000?

[countzero]

With a Commodore A3630 board installed, an Amiga 2000 becomes a 32-bit machine.

erm, no it does not become a 32 bit machine. the bus is still 16 bits. ROM access is 16 bits.

[countzero]

WRONG! Do your homework, I have.
 
The Amiga 2000's bus is 24 bits wide, not 16 bits (I can not remember where I read this, but it stuck in my brain because I thaught it was odd).
 

you gotta do your homework again it seems. 68000's address space is 24 bit long, 16 bit wide. here's a resource to help you :

http://www.devili.iki.fi/mirrors/4x4.hopto.org/

check a500-a2000 technical reference manuals. bus width is clearly stated there.