yep, i can see the inner wheel arch from under the battery tray.
to take those measurements im going to need callipers and im not at work again now until next week, unless you only need a there about and not a dead on measurement?
on your diagram, you show the piping going to the drivers side wheel arch and not to under the battery tray, but if you look at the picture of my engine with the cover on, wont the air intake pipe and the engine cover be in the way? wouldnt it need to on the side like the one i drew?
where did you get your silicone from, ebay? i got an air filter yesterady from a shop in Peterborough
, called ice direct for twelve quid, its a big one to, so hopefully will be alright