If you legit found a XX for 16k OTD i think your a fool for not doing it. Anyone selling a used one has way more than that into it, and regardless of whether or not you want to value after market stuff, money is money and people owe what they owe. At 16k you can build it how you want, but i think you'll find yourself up and over 20k very fast. Good luck finding someone. I pray that the XX community doesn't do what the YXZ guys did and de-value these machines in the first 2 years to the point you cant hardly give them away.