In Sim City 5, what mod would allow me to view the city using a layout grid?

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In Sim City Classic commercial, industry, and residential zones were 3x3 units. Regardless of your road layout, as long as it is a grid there were always six units of space between roads.

Sim City 5 sorely lacks a grid outline, which makes it extremely difficult to determine the maximum size two fully developed buildings of a zone type could end up using. Build a little of a zone and those larger buildings won't appear while buildings too large of a zone will end up wasting lots of space (you can't put parks between buildings like in older versions).

I don't care if the largest RCI buildings are measured upwards of 20, 30 or more units, I would simply like to be able to get the most out of the city layouts.