TIS is only going to have LHD specs. RHD is probably the same for seals but the mechanical internals are [mostly] mirror image and not interchangeable.
And a lot of dealerships probably wouldn't touch that project because they don't usually rebuild racks and you're bringing in something they don't technically have any info on. Some would, you'll have to ask around and hope to get lucky.
What's wrong with it? Leaking?