This is the first part, sadly i couldn't buy the second one since it's sold everywhere. In fact good luck buying any dj with Clyde involved most of them are sold, it looks like Clyde is really popular in Japan.
I wanted to thank you for posting all of these South Park doujins! I have alot of the ones you posted and I am really appreciative that someone else is posting these books as well!
I do actually have the sequel doujinshi to this. I was lucky enough to get it on Ebay. I will put it in my queue to scan it soon as thanks for uploading the first part! :)