speedometer

recently had my gearbox fail on my 98 laguna, have now got a replacement box but the speedo connection is different. my laguna is a phase one so have a speedometer cable and can clearly see a plastic bit that the cable sits in, in the replacement box there does not seem to be anything in the hole where the cable connects,

am now thinking that the replacement is for a 98 onwards (phase 2) with electronic speedometer. has anyone any ideas on how i can get round this?