pinpoint location of bank one on 2001 Toyota MR2 Spyder

where exactly is bank one censor one located in my 2001 toyo mr2 spyder.

Asked by for the 2001 Toyota MR2 Spyder
Bank 1 is wherever #1 cylinder located.
i.e.: if #1 cylinder's exhaust pipe and #3 connected together that's Bank 1.
If #1 and #2, than that is Bank 1.
Are you trying to figure out which one is the B1S1 O2 sensor?