I'm looking to buy a late '40's to mid 50's pickup to use as a daily driver. Seen a lot of 5-window trucks for sale on the internet lately, but need to know whether there is enough space between the driver/passenger side windows and the curved side/rear windows in these models to install an aftermarket 3-point harness-type seat belt. In the pictures, there appears to be little if any space between these windoes. Thanks!