i have only installed 2 windshields with the gasket, usually i have to glue them in. and yes it took about 5 minutes but we had these plastic tongue depressor things that were very stout and tapered on each end. sorry i can't recall the official name for them but they were easily obtained from any automotive store and sure made the job easier by being able to coax the gasket and glass in without scratching the paint and are a tool made for just this purpose. also when the glass was in we had this other tool that ran inside the groove and installed the locking strip in a nice easy sweep. and it's called, you guessed it-windshield locking strip installation tool. i got mine from snap-on but i'm sure you'd be able to get one somewhere else no problem. i don't really remember the exact procedure of the installation so i 'll keep quiet 'cause if you break the glass then you'll hate me big time. just wanted to let you know that these tools are worth it and made the job a lot easier. i remember though the glass went in quite easy and oh yea, don't forget plenty of dish soap. my friend with no experience installed a windshield in his '68 gmc with no problem at all.