Well ...
I was going to keep a couple of the lap belts, but add in a few of the 3-point retractables (like these from
JC Whitney). I'm planning on using the frames form the original seats which have the belt attachment points on them already, and it looks like the window posts will work fine to attach the shoulder mounts.
I'm still debating on what to do for the driver's seat - I've got just the factory-installed lap belt, and while I -should- put a 3-point belt in, I do like the freedom ...