I get asked these things every day.
You can search
HP PartsSurfer for that series of dv6(dv6-1000,dv6-2000, etc.) You can find other dv6 configurations in that series split between Intel and AMD.
The parts "should" be compatible as it is the same series which means same socket and chipset of mobo.
However...
It is really not worth it to do this.
The parts are pricy, if they are available. You can find the part number and search online for cheaper prices, but the money is always better spent on a new laptop.
Newer, better hardware, newest operating system, plus a warranty covering for issues down the load.
Whenever buying a laptop, get the best CPU and GPU that is available at the time, because these are they hardest to upgrade(if at all) down the road. Go cheap with components like RAM and HDD because you can usually find cheaper upgrades elsewhere, like
Newegg.