Take a look. I believe the 28 was only made for one year? 1978? Anyhow, this would be sweet w/ twin 150 hp on a bracket. A whole lotta work to bring it into shape but the price is right! This is close to my house if anybody wants me to go look or take some pix.
http://winstonsalem.craigslist.org/boa/1772472415.html
I would love to have it...but I honestly I know I'd never finish it. Just not enough spare time.