I'm gonna get a car without nav probably, and I wanna put a DD and Nav system in it. What's the cheapest DD nav that isn't a piece of ****? I'm talking total cost, Nav+DD+install (if nesscary, idk how hard a DIY is.).

Thanks in advance

 

for any double din add atleast $200 for the install kit, the metra kit is about $170 + wire harnes(s)
the JDM kit is a bit more

what is "cheap" to you?

a cheap double din with nav is $1000 to me
that would be an Eclipse 5510 or the newer JVC