Been on a search for this for a while. There was a company Nacho Lights that had a bar but stop making them. Interested in the midsize with light pod tabs.
If your paying cash with no trade then yes you pay full value in taxes.
If you have a trade then they subtract they amount and pay just taxes on the difference.
This is in Arizona and if you want you can call a dealership to find out. Also if you bought a vehicle with a trade then just look at...
In theory accessories are cool factor and usually worth 10-20% of total value.
Next lets say the new price is 60k and taxes at 10% thats $6000. If they offer you 45k for your trade that is subtracted the from price which will be at $15k (=60k-45k), so tax would be $1,500. So you save $4500 in...
From past experience I now remove my limb risers, last time damage my hood when only doing an alignment. Now have an camera facing the interior as someone tried to break into my center console. Ask for no wash as they suck at it.