Dyna 2000 in a 82 GPz1100 question

[ratvespa]

so I put the dyna 2000 in my 82 KZ1100B2 a couple days ago. It start and runs fine. Although I did find this on APE's site and it also mentions it in the dyna manual

"For those of you who plan to purchase the new Dyna-2000 ignition for a GPZ 1100 motor (1981-85), you must use the ignition housing with seal from a KZ1000J motor."

I did not do this, and it does not make much sense to me. once the old pickup plate and advancer is out of there, there is nothing really to replace, you are left with 2 engine case halfs, a seal and the end of the crank. Unless they are talking about the ign cover?

[MFolks]

It's a confusing statement as I though the 82 GPz's and Kz 1000 and 1100's were all J motor engines.