i have seen pictures of them in 914s but have no idea what it took to get them in there. If anyone local would like to test fit a set i would have no problem with that. Here are the seat dimensions.
https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B__cbg-8sr9WOGZhM2UzMDEtNzg1Yi00NDg1LWI0ZDUtYjQ4NmI0MzdkZ WFi&hl=en