Again you've been deceived Mik, As the reservoir isnt even 7cm from firewall to end. the filler bottle tapers out and thats why it sits close to plenum but i can get lid on and off so I'm all good with that. Will finish it and take some more pics then throw the box on and jack it in place with tailshaft connected to see how the Bluey crossmember lines up. Should be damn close from my measurements.