Replacing the extenion table with a router table is a good way to save space and was the only way I had to go because my shop is so small. The only downside I have found is the fence rails on my tablesaw made it imposable to use any clamp except a short bar clamp. On the open end I can use C-clamps or screw clamps. To hold my adjustable fence I cut slots in the base plate and drilled the table for hold down bolts. My router table is on the righthand side of the saw, but it can be mounted of the left if that works best. for you. Be fore warned, I didn't like the first one I built so I improve on it and built another and I'm happy with it, but if I run out of honey dos and other projects I have some ideas on how to improve it even more. I hope this helps, go ahead and build it you won't be sorry. Hal