Hey Harry,
I too didn't want to get sucked into the dreamland vortex that this thread has produced BUT ....
100 RW HP from 1200 with single downdraught
Maybe I will throw away the 1400 and twin webbers and try this ..... I can only manage 89 RW HP

Converted had 106 with his engine and it was considered quite good. Well, as you said - "When the flag drops ..."
See you at Bathurst.
Cheers