Just so you know, I copied this from Wikipedia ...
Atari Games licensed the Atari Jaguar's chipset for use in its arcade games. The system, named COJAG (for "Coin-Op Jaguar"), replaced the 68000 with a 68020 or MIPS R3000-based CPU (depending on the board version), and added a hard drive and more RAM. It ran the lightgun games Area 51 and Maximum Force.
In laymens terms, how "tweaked" was the Jag hardware to run games like this? I assume it had to be a fair amount, or they would have tried to port it to the Jag cd (I could be wrong) In any event, I really like Area 51 (it is one of my fav light gun games

) and I think its cool that the Jag saw life (albeit brief) in the arcades.
Most wanted - Eye of Typhoon, 3DO Magazines issues #14 & #15, Pro Stadium, Defcon 5