The software is MAC1-0D34. This is the aggressive version. I had an '06-dated TCU in my '02 4200. It was the aggressive version as confirmed by Emblem. The question is - is this item really brand new - and thus not had the upgrade (the labels rarely get changed). If it is, then it is a bargain as an original TCU loaded with this version of software is very hard to find. I should know, as I spent two years looking for an original after I had my TCU software upgraded, and regretted it. I found one eventually and installed it. Then, when I eventually sold the car, I put the upgraded one back in and sold the original for £495.
Dave