Please review some of the earlier posts about this. One guy has done it, at cost under $120 I think including wheels and parts like bolts. I'll put the pertinent links up in a bit.
Here is the thread. I'm sure you'll need to drill, but that's easy enough. It could be a bit toppy tippy due to the wheels being more inside the weight distribution. I have a 640 on concrete, moves 7' to cook. So stock wheels suit me fine. In the future, who knows? Like someone else did, they went 8" wheels, mebbe that's better for you. Less weight than a 640.
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