tecumseh carb numbers

[38racing]

I've always used this link to go from manufacturing number to tecumseh number. I was just looking up 1099 and found it listed twice. 632334 and 632334a . Probably no big deal. But for 1006 the numbers are completely different. Maybe still much the same but who knows.
http://outdoorpowerinfo.com/engine_spec ... mfg_no.asp

[KE4AVB]

Following is from my prices provided by my distributor showing the supersession. It looks like Tecumseh superseded both to the same number.