You sure they were on a Ferrari F1 car...and not a Ferrari powered F1 car? I am looking for diversions, so I googled "Ferrari F1 engine" images. A few pages down, there were some headers that look VERY similar to the "short" pair you show...the link took me to FMCG collectables...where the page describes them as having been from the 2007 Ferrari POWERED Spyker F8VII. Available for slightly less than $3000.
I should have some pics of the F2007 engine with headers, I'll look and post em up when I get home this evening.
Unsurprisingly they don't allow a lot of shots from behind the car, but here's what I could find. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login