Car appreciation... the aesthetics, the engineering, etc

I recon, using my vernier eyes, by the time you’ve got the jenvey manifold, bodies and 90mm trumpets on its about the same as that stock manifold setup height wise.

I'm clearly misunderstanding something as this would appear to suggest that I need ~45cm from valve to tip of trumpet, and I'm deffo not going to fit that in:
http://www.exx.se/techinfo/runners/runners.html