Thank you for the info! I appreciate it.Street blocks tame the tramlining.
Race blocks do the same, plus add more negative camber / allow for even more shims at the bottom to further increase negative camber.
That's my understanding anyhow.
Nothing wrong with getting the race blocks on the street, except likely some additional inner front tire wear when life is primarily made up of straight lines and slow speed corners.
The harder you corner the car routinely, the more sense the race blocks make.
If you are happy with the alignment (no bump steer or tramlining), then I think that you don't need any type of these blocks. Especially for street use. That is all they were originally designed to combat.
If someone wants to run a track setup, the stock blocks do not allow for very many more bottom shims, so the race blocks still might make sense in that case.
EDIT: And if you ever find yourself in southwestern Ontario from May to October, we'll take you out on track. I guarantee you'll want to do it some more!
@John4C - please mark me for street