Yes, yes, welcome, we've grown the ZA members quite a lot in the past few months.
36 Weber gives good power, and should be on par with the SU's in most respects. However you might notice a slight improvement in fuel consumption with the SU's even when you trap it a bit down the coast between Camp's and Landadno... very nice sights, and lovely twisties...

No, I just lived there for 7 odd years, moved back to Petoors about a year ago.
Have a look at
Rowland Manifolds they make all kinds of manifolds for all kinds of cars. I wonder if they would make a manifold for the A series to bolt on a set of throttles from the 20V Toyotas...? That'd give you plenty more power, and electronic control.
What I do notice though, is that they make a set of "Toyota Throttle Bodies to DCOE" intakes. Maybe that's an option...