Google search for "extended table saw fence" has not come up with a good match so ...
I have been shopping on and off for an older (late 70' - early 90's) Craftsman 10" table saw. Cast iron table extensions on both side, front mounted, belt driven motor. But I really want and extended fence system wuth the capability to mount a router and use the work surface as a router table.
So how about some "cost effective" solutions (which leaves out Biesemeyer). Remember this is going one a 20-30 year old second hand saw that I will likely pay $100-$150 for. A fence that can be adjusted truly PARALLEL to the blade, and will stay that way, is key !