hi:
I have a 99 Boxster w/64K miles.  Everything seems fine and the PPI (bought it in August) didn't turn up anything.  However, it is an older car with a few miles on it and I can imagine having issues down the road.  I will probably put no more than 6K per yaer on it.  I have been researching warranties.  Warranty Direc, which several people on the board seem to think is good, won't do a warranty for this car.  
I found a company that has several options.  The full warranty for this company that covers everything is just too expensive.  It is a little over $3K for 24 months.  I'll risk that in the next 12K miles I won't have a major problem.  Howevr they offer a power train warranty that goes for five years/100K for $700.   This seems to cover all I would want in the engine and transmission.  I hav attached the link.  The company, Great American Insurance, is a large well rated company.  I think I am ok there.
Any opinions on whether this warranty itself is worth it?
Tahnks in advance for your input.
http://www.autowarrantybroker.com/extended_auto_warranty_plans_CoverageDuraLube.aspx