Hmm, could be my memory is fuzzy, I recall them being about the same height as a LR port, just located like a HR with less floor. But, could be wrong. I think it was already discussed that flow numbers aren't published because they can be misleading, but would like to see if someone has used a set and start to understand how they did and where they fit in best (OK for hydraulic roller street motors or do they need a more serious combo to really shine).