Corvair engine swap, Tell me why this isn't popular Options

[914rat]

I saw a car in the classifieds that has a Corvair 6 engine swap with the engine set up to run in the correct dirrection.I was wondering why we don't see this conversion very often.Seems like a pretty straight forward conversion.
http://www.914world.com/bbs2/index.php?showtopic=114974

[914rat]

After reading the build thread and looking @ the pics from the car for sale in the classifieds I thought that this would be a good topic.I also thought that it looked to be a pretty simple low budget way to get 140-200hp.It also might be considerably less than building a big 4 like a 2270 with the same power potential.All of the conversions to water cooled from V8 to Subaru require considerable fabrication as does a 911-6 motor.The Corvair motor has a wet sump like a type 4 and is pretty much just a drop in with an adaptor,clutch and motor mount.For those that can't afford a 911-6 motor or don't have the fabrication skills to go to a water cooled drive train this might be a viable solution to more horsepower.With the cost of quality type 4 parts driving up the build cost to make 150 hp this could also be an alternative to a big 4.I haven't made up my mind about anything I was just asking questions that might expand my knowledge of alternative HP for the 914.I'm afraid the gene pool on this site is getting pretty stagnant.Shooting down other options without any hands on knowledge dosen't help us learn.I lurk here a lot and don't say much due to the parrots that keep reiterating the same thing over and over.The responses from The Doc,Zach,and the others that have actual knowledge of these engines and contributed in my further education of 914 conversion knowledge I thank you.