How to trade in my truck for a newer one?

I have a 2004 f150 truck, and i feel it's time to trade it in i hate ford, i wanted a ram or a silverado kinda was strong armed into buying this truck… It's financed by a local company i like, they gave me a good interest rate, i still owe about 4,000$ on the truck, but i want to trade it in for something newer, how would i go about doing this? I want to KEEP MY FINANCE COMPANY ON THE NEW CAR I PICK! So how do i go about doing this? I want to use my truck as a trade in for my down payment, and get a new truck with the same loan company that's financing my current truck. Is this possible?

Recommendations for a good all around audio unit?

I have a lifted 2001 Ford F-150 SuperCrew Lariat. I'm wanting to install a head unit that does everything. Radio (do not care about Sirius), CD, MP3, Bluetooth, AUX capable, backup camera, GPS, etc. As far as speakers go, i'm not too concerned. I don't care about shaking houses with my loud music. I just want something crisp with decent bass (35" tires make hearing things in the cab difficult). What is the best bang for my buck when it comes to a decent head unit and speaker setup?

What is wrong with my 2004 Ford F150 5.4L 3V Triton?

Currently has 153,000. Have replaced and done the following: spark plugs, Coil-on-Pack ignition coils, fuel filter, FDPM (by spare tire), camshaft position sensors, VCT solenoids, cleaned throttle body and MAF sensor, checked fuel injector and ignition coil harnesses with noid light, multimeter, and fixed any visible chafed wires (found one by AC accumulator). I also switched around fuel injectors, spark plugs, and ignition coils (one by one of course) and code would not follow. My current codes are now: P0022, P0171, P0306, P0316, P0355. P0355 has ALWAYS been showing while performing everything I mentioned above. Truck still misfires when started and happens sporadically when driving at a steady pace. After researching forums, I don't think it deals with P0022 (engine ticks due to cam phaser). It's always had that problem and to my knowledge will not cause a cylinder misfire. After checking everything listed above… I fret it deals with the PCM or possibly a clogged cat. Thoughts?

Need tips - buying a PICKUP TRUCK - car?

Hi
what is the main differnece between pickup trucks like ford 150, dodge ram givs compared to sedan or SUV in that range.
other than towing capacity.in what other way they coudl be compared to regualr SUVs or 4 door sedan. Will i get the same milesage and driving comfort level with pickup trucks.
basically, what are the pros and cons of a pickup trup compared to SUV or 4 door lengthy sedans.
i'm thinking of a switch from my 4 door sedan to a pickup truck. Should i go for ford 150 or dodge ram. My budget is less than 15000 for a used one.in that price range,
what can i expect that i should consider as a better deal.

Buying a truck that was used for towing?

Buying a truck that was used for towing? - 1

Added (1). I'm in the market for a truck and I have found two in budget. A 07 dodge ram 1500 and a 2007 ford F150 XLT. They are at a dealer so the history will be unknown. The ram was clearly used for towing as the previous owner removed the wiring setup. The F150 appears to be used more for commuting (has bed cover, no signs of towing) but I can't be certain. F150 has 50,000 miles, the ram has 66,000 miles. Would the Ford be a better buy? The Ford is listed at 1,000 dollars more.