ok, according to the Pioneer Website, there is no AVX-P7000, unless you mean the 7000 or the P7000CD (or it could be older, or you could be in an other-than-US market).
Those units are priced well above the $1000 mark ($1100 & $1300 US), and both include tuners.
Okay, here's the part where I take back some of the stuff I said about www.carlcds.com . You can buy an in-dash, motorized 6.4" LCD w/remote for (sigh) $640 US.
You might want to seriously consider this option, it being $500 cheaper and all.....