It sounds like you can Mb Star C4 possibly afford another Porsche (doing what you've suggested will cost a lot!). I don't know if you're talking about a 356 speedster or a 911 speedster (yeah, they built a 911 one too), but you state that it is a "replica." Just something to think about: a brand new authentic Boxster S or Cayman S can be had, with the wonderful PDK 7-speed dual clutch automatic transmission for $61,000 to about $64,000. While the 2014s are much improved over what has gone before, dropping back just a year or two to a used one will drop these prices - a lot.

And while you say you Mb Star Connect C4 don't care about speed, these newer Porsches are fast ... fast, and their handling will amaze you if you're used to either a 356 or an older 911!