This was the basis of not only the highly popular Westphalia California VW camper van, but of numerous other vw motorhome conversions by a range of companies.
The Volkswagen T4 van, released in 1990, was the first VW transporter without a rear engine. A major departure from earlier configurations, this front-wheel drive model was available in two wheelbase sizes, and the front engine design made a far greater range of special body variants possible. The shape maintained the wedge of the T3 (t25) but in common with much other styling of the time, had a more rounded front end and details.
The engines are transverse mounted with four, five and six cylinders, and the popular TDI diesel engines with direct injection, brought the Transporter’s performance back to a competitive level.
Enthusiasts naturally bemoaned the death of the classic Type 2, but rationally it really was inevitable. The T4 was a tremendous success, and the introduction of its successor was delayed until eventually after 14 years, the T4 ceased production in 2003. This makes it second only to the T1 (the Beetle) for length of production in its home market.
There was one major model change to the T4, in 1994, when the front end was redesigned to allow the six-cylinder VR6 engine to be fitted into the engine bay. The commercial variants, which were not available with the VR6, retained the old look. Following the Type 2’s naming convention, these two versions are called T4a and T4b informally by enthusiasts.
You’ll see how the VW T4 is configured in this earlier post http://vwmotorhomecampers.co.uk/vw-motor-homes/vw-t4-motorhomes