shocking

[spreadbury]

iv recently fitted the jaguar v6 engine out of a 2004 s-type. in to a mk3 cortina pickup, but now i have no room for the battery under the bonnet and have to relocate it in the cab. as there is no much move behind the seat. i need it to be as small as possible in size. but as powerful as i can get. so my question is how do you work out the CCA and the AH that is needed.