Originally Posted by f150skidoo
Funny you said it i was reading a similar thread on f150 online and a lot of guys noticed the 97-03 body features ie. 5 lug rims back window style. There are sensors on the tailpipe so it's probably a mule for the power train.
Sometimes to get a test truck rolling they'll throw an old undercarriage in it. The truck is headed to the crusher anyways, so why spend the money to prototype the whole thing?
My guess is that they are testing a turbo 5.0 in a old chassis.