You'll need to modify the k-member to accept the modular motor, a
trans with a modular bellhousing pattern, different driveshaft, upgrade the fuel system to injection, the cooling system, intake piping, exhaust, etc. It will be a very involved project, but it can be done. I saw one at a car show about a year ago, the guy said he ran into a lot of issues along the way, but in the end he was very happy with it. Having a wrecked car to pull parts from will help a lot, but it won't be simple.
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That hunk of junk? Yeah, well I've made a few special modifications to that yellow 99 Gt, it makes the Kessel run in 12 parsecs and eats turbo japs and poops chevy's