the ABF is a littel bit taller by about 15mm ( for the block itself )
it dosent cause any issues with closeing the bonnet, it's close the small vac line to the airbox on the throttel body just rubs one one of the stiffeners under the bonnet so i just taped it clear, if you had the underbonnet soundproofing you may have to cut a small square out of it at worst or fettel the rear motormount to lower it ( i'm on g60 mounts whitch are competly diffrent so not option )
as for fuel pluming its easy cut feed an return lines to sutable length and conenct to rubber lines comeing off fuel rail, as won't have ridges on use 2 fule pipe clips to be certan as cut line will have no ridges on the end, dont us jubille clips