Personally,I normally fit them dry,then using a caulking gun,inject a product called Arbomast between the body/rubber,and then the rubber/glass.
It makes the installation process easier and cleaner.
Arbomast is a non aggressive,silicon free,non setting glazing compound,you can also use urethane,although it can be messier!
I'd definately consider doing the fronts,the rubber profile is very basic compared to more modern styles and could probably use some help.
I'm leaving my rear glass
dry as I think it'll be OK.(I'm sure it'll prove me wrong!)
If it is the fronts I simply clean off the excess/ooze with glass cleaner,a plastic scraper and finally with paint shop panel wipe.
With the rears I apply the sealer
before the filler/lock strip goes in(much easier) then clean up in the same manner.
JMO.
