Exclusive driving impression: MF 8400 DynaVT tractors Stepless move into 300-horse sector With its all-new 8400 high-hp line boasting more than 300hp (ISO max) Massey Ferguson now joins its sister marque Fendt as the only two mainstream tractor brands in the stepless 250hp+ sector. Or it will do when the 8400 DynaVT models go on sale in early 2005. Here profi gets an exclusive drive