Go to the V10 forum, lots of good information in there. I had the later 3 valve version of the V10 in a 2005 F250 and loved it. In my opinion it is or is close to the best engine I ever owned. It is a bit thirsty though.
It is a GREAT engine!
The '99 had the lowest output, with a nice bump in 2000 with the PI heads and intake (which can be added to your truck) and then another bump in 2005 with the 3V heads.
Very, very few V10 owners are anything but delighted with them.
And those that are not are usually victims of bad spark plug installations, or folks who are wishing for 20 mpg.
IMHO, the exhaust stud/nut rusting and breaking issue is the only real problem with them - especially in areas where road salt is used.
I LOVE MINE. I did years of reading and research and looking before I bought mine.
I bought it for the following reasons with the idea I plan on keeping this truck for 20 years or so!
Cost up front much lower than diesel
I don't tow or haul often enough in my mind to justify the diesel but I need lots of power sometimes.
By 2008 version most of the kinks had been worked out (I hope).
I bought truck knowing fuel mileage was going to be around 14 mpg on average