Inliners International Forums General Discussion Blown and Injected Lumps needed for low RPM turbo motor?

Thinking about my objectives. Looking at low RPM (4500) low pressure (8psi max) motor. Will lumps make that big a difference with the motor being force fed? I can do lumps but seems like a bit of a waste for the application.

Second related question. Are the rocker stand / valve centerline angles shown in Leo's book correct? If I bother to do lumps I'll do some of the other prep work on the way by.

As always, thanks for the guidance.