Hello
Dunno.
The self-help method might be to head over to the Toyota Electronic Parts Catalogue.
This is it for my van:
https://toyota.epc-data.com/regius_ace/lh119v/114894/
Then, load up one browser tab with the option of a LH129 and another(s) as a LH112 / 125 and see if the parts have the same Toyota part numbers. You can’t rely on the Parts Number Catalogue (PNC) as this is common to many, many vehicles as it’s the 'thing'. You need to check the match for the 12345-67890 part. The complication though is that many models in the EPC are shown with several 'Schemes' and these relate to revisions, various options or crosses model facelifts. This makes it a lot harder to be definitive. I also expect headlights have to meet various country specifications so a further issue.
I also wonder if the parts-filter on the Amayama site might say anything different. Try:
https://www.amayama.com/en/catalogs/toyota/hiace/4-van-3-left-h100-1998-r-2734/electrics-4/headlamp-311
You might have to ask for pictures and ultimately try them?
I think there’s less variability for the rear lights but can’t be sure if the wiring is the same. Some models have lights on the tailgate, too!
A last point to consider is that the registration year might not be the same as the model year. I think mine is a 1992 built van but it's registered as a 1993 as this is when Toyota finished turning it into a camper. More to consider if it's the same.
HTH!