There is an online catalog of RV parts and accessories that is used by most RV dealers in the US and Canada.
Select your Province and then look at some of the towns near Toronto. Click on a dealer link and it'll take you to the catalog. I searched on window hinges
and found them right away. I am certain that one of the RV dealers is close to you and can help you with window parts.
Helpful hint: Don't think Sunline windows - think RV windows when you talk to the person at the parts counter. Most brands of RV's use all the same windows and doors and stoves and water heaters, etc.
I looked at the '92 brochure and it looks like the Saturns still had the rectangular windows for that model year. If you go to page 183 of the go-rv.com online catalog, in the lower right hand corner are several different window hinges. I bet one of them matches what you need.
'12 F250 4x4 Super Duty PowerStroke 6.7 diesel
2011 to present: '11 Cougar 326MKS
1999 to 2011: '99 Sunline T-2453
Amateur Radio kd2iat monitoring 146.52