The Porsche 914 was originally intended to supersede both Volkswagen's Karmann Ghia, and Porsche's own 912. Neither accession occurred, but you can still decide if today's Nice Price or Crack Pipe 914 is worth replacing your hard-earned cash.
Porsche is rumored to be introducing a four cylinder engine for the Boxster in a couple of years. If you can't want for a mid-engine wasserboxer from the house of Ferry then perhaps today's Nice Price or Crack Pipe Subie-914 will suffice. That is, if its price is out of the box.