[speed]

Factory Five Challenge requires an Factory Five Challenge specification car. But non spec cars (ie: non 5.0 liter engine...) can do HPDE and Time Trial in other classes (without having to change their car or buy or build an FFC car.)

Sid: Best starting point for next season might be another group visit to NSSCC's spring indoor driver's school which will include track time at Autobahn again this spring.