manor are currently using the 2014 chassis ; the 2015 pu won't fit that it seemspob wrote:Manor are only allowed to used the 2014 PU with agreement of all the teams, they won't be allowed to do a separate upgrade plan too. However, if they find their chassis is competitive, it could be worthwhile to switch to the same upgraded PU as Ferrari if they can afford it and are able to modify their car to fit it.