question on the Lulzbot Taz 5

i was thinking of expanding the Lulzbot Taz 5 build size
with a list resources , tools , there specifications , the price in Canadian dollars
and where i can find them , and how that would be done

That’s a lot of customization. It’s going to depend on which axis you want to expand… Or all.

At the very least you’ll need 2020 aluminum extrusion to extend or build a new frame. A larger aluminum plate to support the print surface. Larger borosilcat glass of alu!inum for the print bed. Longer rods and acem screws.

There are threads in the development section… See Mega-Taz and Onodrim.