The tallest board components are two conventional air cooled heatsinks on the FETs that form part of the power supply. I don't have the height to hand - I will get back to you. Here is a rendering of a draft of the module boards, installed in a Sierra. Note - this design is not final, and is subject to change.
thanks for the indepth info, Simon.
beautiful design so far, cant wait for the final design.
Anyway, on the design im working on, i need the height (approx is fine) of the two conventional heatsinks you mention, let me know when you have them?
ttt
Main aim was to get the down stream one a good distance above the water pump.