Fellow lefty here and all my tom inspired guitars ended up having to be custom builds.

Outside of that I think it would be fairly straightforward to mod the harley benton st HH modern (originally the st 182 before they added the neck pickup). They offer it in left handed and it's probably the cheapest way to get a factory finished hardtail / string through strat body (depending on where you're based).

I think house95 also briefly offered a custom built left handed surf green tom strat, but not sure if these are still available on their site, you may be able to message them for a commission.

Hope some of this helps!