I think Bilstein might make struts...the 1st gen TL is based off the Vigors platform, which don't have aftermarket struts for either.

You can always get some custom valved ones made, but OEM is probably your only option.

You can also get the part number and look around other Honda/Acura models and see if the numbers match.

I know 5th gen Accord springs will fit the Vigor, the struts may or may not fit, but worth looking into.

OEM struts on these things are pretty good. I've been running a 2.3" drop on OEM struts with 150,000 miles on them and they're still extremely firm. Just drive with caution and you'll be okay.