Nice work.
Your cut & shut on the prop has inspired me to do the same. I have been stalling for several weeks now on this, think Ive developed a bit of a mental block on it.
I used the std 150 heated inlet manifold which went on fairly easily (although I'm now going to have to T into the top hose for a heater supply)
PS before you use up your rocker gasket - I found that the filler neck on the Holbay cover needed shortening for the cover to fit back
Cheers
Jules
RatSport www.ratsport.co.uk