My Dad had a 1999 F150- 4.6L, It had the same problem. I changed both head gaskets. That was in 2003-4 somewhere in there. It seems like I did it on a Saturday.
All equipment is wore out.
<- Never mind. All equipment has been repainted and with new decals. It's like I have new mower's again!
48" Ferris WB
36" Ferris WB
All Echo hand helds
<- That's how I feel at the end of the day.