There's a place in Scarborough (Midland and Ellesmere area; Midwest is the street specifically) called Total Suspension. My buddy went there and he said they did a really good job. I'm not sure if they are still there but I'm probably going to check them out after I put my coil overs on. They also do slammed cars.
edit: I searched around and found them, http://www.totalsuspensions.ca/index.html