CPS2 ROM swap

[Malenko]

I picked up a Marvel Vs Capcom CPS2 system, and Im going to have hobby roms send me the Phoenix ROMs so I can pull the battery. I happened to get a snazzy Street Fighter Zero 3 green A board (that works on my USA A board) and I was curious if its possible to convert it to USA with a ROM swap (I plan to phoenix this board too)

Secondly, there is some graphic issues with SFZ3, and I was going to reseat the ROMs, but I am afraid to pull any until I get the phoenix replacements. Its strictly the background graphics that are messed up, which rom should I try to reseat and will pulling it screw up the game? The info Ive read on the suicide battery isnt exactly clear/consistant

[Malenko]

This is the closest thing I've found thats remotely helpful:

http://www.solvalou.com/subpage/arcade_roms/S/sfz3jr1