Very smart Peter. You just need side pipes and an "8" on the grill mesh to complete the effect

Not convinced by side pipes, but am looking at splitter valves for the exhaust, so I can bypass the silencers.
I was planning an 8 on the grill but am tending towards 63, which is the sum of my birthday (7/4/52)
I have acquired a spare black grille, I just need to get on and do it.