I would not recommend doing MATH132 if you didn't do 3unit maths, most people in MATH132 did 4unit maths.
First half of MATH132 will go over few topics in 4 unit maths.
Just try MATH135, you can do MATH133 if you get a HD in MATH135 anyway
MATH135 is really easy if you put some effort into doing the work weekly and not fall behind. You just need basic knowledge of Logs, Exponentials, Differentiation/Integration (and i mean BASIC) and you're good to go. I made the mistake of messing around and being lazy for this subject and still pulled a Distinction anyways.