....Yup: kate(at)jkm.org.uk
Jim will probably be busy either in the workshop or out datalogging a car. Kate is the 'K' in JKM and knows her stuff as others will also confirm if asked.
APR vs Revo for a remap is not an easy choice - They are both good.
I gotta date with an Amarok coming up so must dash (pics later).
You may do better with the generic
enquiries@XXX.XXX.XX email address rather than targeting Kate.