Vent, breather??

[SplitfireIV]

Hi guys!

Was wondering if you could take a look at the pic below and help me out.

The image is a 4EFE mounted in my Triumph Spitfire project, pic is a number of months old, so it does look a bit tidier and neater now....promise!) Two things I've yet to sort though is the pipe marked with the red arrow on top of the rocker cover. Where should this go, or can I blank it off or put a filter on it?

Second, the green arrow is the vent coming from the fuel tank, now, in the Spitfire the tank is quite high (level with your back almost when seated!) so the vent has to be kept above that level. However, it does produce a strong petrol smell that eventually gets back into the cabin. Is there anywhere I could alternatively vent this off? ie into the inlet manifold/throttle body or such?

Thanks for any help!

P