Craigslist has definatly become an adventure in buying and selling...
Twin shadows....check out Jeff potter on YouTube.....
https://m.youtube.com/channel/UC4rY8T6g8gLlgTAWyj5LW8w
He uses Dakota chassis for his IH builds...its not a how to but more like a" I built it and now it's for sale " kinda deal....but may give you some ideas...I'm not big on the Dakota stuff though...