Yes, you may have something there John. That was just some chrome trim tape I had at hand but the thinner strip - and a bit closer together would be more 50s. I will keep an eye out for some thinner tape.

Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge