Randy,
Believe me, I am listening to you. I have done a little research on the 181 cu. in. "Mercruiser" since you last mentioned it.
Link to a post about the 140 HP, 3.0L - 181CI, cylinder head (casting #2776954):
http://www.everythingboats.com/boatbuil ... ?read=7461
Here's a link to a head : $527
http://www.marineengine.com/parts/sierr ... a00665.htm
Another link to a head : $550
http://www.marineengineparts.com/shopsi ... age30.html
Found this site on vintage midget racing:
http://www.vintagegarage.com/midget.html
Considering the Seattle area is big on boating, I'll bet there are a few of these motors lying around.
Here's a local marine shop with a presence on ebay:
http://stores.ebay.com/Marine-Boating-Goods
Here's another local engine shop:
http://usengine.us/
Here's an exhaust manifold on ebay:
http://cgi.ebay.com/ebaymotors/ws/eBayI ... 0199938094
I also didn't realize how inexpensive NEW turbos are. So many choices.
Yeah, I am thinking about it. Megasquirt and an intercooler, too. I need to get a little smarter on the technology.
I think my Sunbird is the perfect 'canvas' for this swap/add-on.