I can not seem to find the exact size on these and some places rate them in different units then others.
However, there is a short cut-
Mazda Miata injectors are much the same and interchange with Toyota injectors, so here is a link on alternate injectors for Miata's
Keep in mind that there are high and low empedence injectors (yours are high I believe) and adapter clips can be found to adapt these injectors to a different harness.
miataturbo.wikidot.com