Help identity carb

I'm trying to rebuild the Tecumseh carb on an old 7 HP Yard Man snowblower and I need to match the model to a rebuild kit. I've found a model guide, but there are multiple numbers stamped. It's a non-adjustable carb with 27 stamped on the bowl, 42 stamped on one side of the body, and 525 stamped on the other.

Thanks!

Yes a model engine would further simply the identification but I did find this website. According to them, Tecumseh stamped part 525 coincides with the Carb# 631818. outdoorpowerinfo.com/engine_specs/tecumseh_carb_mfg_no.asp#google_vignette