How hard would it be to swap a 1971 VW transpoter engine and transaxle with a similar year porsche?

I am looking to swap my 71 transporter's engine and transaxle with one from a similar year porsche. How hard will this be? Is it even possible? What would be the hardest parts? I am doing it for the better gas mileage of the 5 speed, so is there any similar 5 speed that would be easier or cheaper to swap?





Thank you.|||dont bother purring a porsche engine in there. too much work and money. get yourself a 5 speed gene berg tranny and build the stock 1600 into a 1776cc and you will get better top speed/performance, and properly tuned can get better mileage|||It should not be too hard as long as you have some fabrication skills.