Yep, that upper is toast. And it is certainly leaking coolant. That'* why we wanted to know if you had changed the upper intake. The UIM we recommend is gonna set you back about $115 delivered to you from APN. That is a kit that includes the UIM gasket, o-rings, brake booster vacuum fitting, new top for the PCV chamber, and two reduced diameter stovepipes for your LIM. (You would use the pipe with the larger base.)
If, by now you are out of money, and if you have the time, you can repair the perforated upper yourself with a stainless steel sleeve and JB weld using the method described here for about $25. http://www.bonnevilleclub.com/forum/...ic.php?t=33565
You can take an upper that looks like this:
And repair it so that it looks like this:
You can re-use the new UIM gasket you just bought. It will work fine. If you are interested in trying this, I can provide you with the parts you will need. PM me if interested.