I'm thinking of swapping my carbed R1 engine for a 2008 Fireblade lump. The Honda seems a bit high with the stadard airbox fitted. Doesanybody know how to make it a bit lower or sybbly measurements of the stock setup?

Buy a billet sump from AB Performance, that'll help with ground clearance, as it's about 100mm shorter than the standard sump.

Then make a new inlet manifold like my friend did, here are some photos with the panel air filter removed.