Do you have the original glass?
If so i would strongly recommend you find a local glass shop who can use the originals as templates.
Why? Because i've noticed some aftermarket kits are 'marginal' to say the least.(Speaking from experience)
The front windshields I copied from a friends set were a lousy fit.
I assume you'll be replacing rubber seals too.
Steele Rubber seem to be the ones most favoured around here.
Not the cheapest but by all acccounts the best.