Oh well your well on the way to sorting the car out if you have the vac pipes . The pipe under the throttle body is an absolute B....D to fit and your mechanic will have his patience tested .
Interestingly the engine on later Japan Spec cars went from SPI engine block to MPI , the later having wasted spark ignition and coil pack but still retained the side mounted radiator.
As this is an MG forum and a very good one , I wouldn't want upset the folk on here with Mini related problems so , if you need any other info , you can always PM me .