But why? They don't have to sell you a vehicle if they think someone else will pay more for it. How many Raptors have you bought with this method...Gen 3s are still over MSRP in many parts of the country...
OP you might get more going private party especially with those mods, but you have to factor in the headaches of the sale vs. just trading it in. Does the dealer know you have a tune and frame cut bumpers?
Or convert mostly back to stock and sell parts to make up some of that missing $5K. I doubt the dealer is giving you extra trade in for rims, bump stops, light bar, deavers, etc.
I bought 2 Raptors like this, a 2018 purchased in Jan of 2018 & a 2020 purchased in October of 2020
The ‘18 I wound up getting for $5k off sticker, & they threw in a tonneau worth about $500 + $1000 credit toward a 100k mile extended warranty that wound up costing me an extra $700 or so
I put $2k + in mods on that truck & 42k miles until it was totaled in Late oct 2020 when a distracted driver blew red light & broadsided me
Including the mods & the tax/title/reg I MADE $2200 in the insurance payout!!! They gave me nearly $68k free & clear think was paid off
My 2020 was a tougher negotiation as that was right when the chip shortage/supply chain stuff was really starting to heat up, that one I got for $500 off sticker + a tonneau cover-
As you can see from my insurance payout- it really pays to be prudent & work the best deal possible even tho these things hold their value great.
I also purchased 3 GM trucks same way….when I bought the 2018 Raptor I had another deal going for a 2019 GMC Sierra Denali 6.2, I think I still have the offer letter somewhere- $12,700 off sticker….