1987 Pella Window Parts

I have a number of Pella casement windows purchased in September 1987. I want to know if the following parts you list on your web site will work as replacement parts for these 1987 Pella windows:

39-363
39-371
39-394
39-395

If yes, will I need to get any other parts (e.g., new crank mechanism) to adapt them to my 1987 windows, or will they work as is to replace the equivalent parts on those windows.

Thank you.

If I order some of these parts and they turnout not to fit will you let me return them for a full refund, less the shipping, of course?

Thanks,
Al