The pecko got too big for the building! Is he done yet? Of course not, you can make him even bigger! :3
For details of previous part results, check this page: http://growthdrive.mctaylis.fr/
As for first part, a poll will let you vote for which body area you want to put your money into.
Vote here: https://www.patreon.com/posts/growth-drive-3-74776427