Dreamcast Past (ADV03MODELS hack & texture pack) by PkR

Restores Dreamcast Mystic Ruins (Past) landtables and textures.

Act 1 (Echidna Village) uses the Dreamcast landtable with a few minor tweaks such as ladder collision and SET object tweaks (no objects were removed).
Acts 2 and 3 (Master Emerald Temple) use Dreamcast landtables that have been tweaked to fix alpha channel problems and restore reflections.
The water in the background of Acts 2 and 3 is slightly altered default SADX water with better textures.

Changelog 

Version 0.95
Restored palm reflections in Acts 2 and 3

Version 0.9
Acts 2 and 3 now use full Dreamcast landtable ports
Column reflections restored in Acts 2 and 3

Version 0.81
Minor SET file tweaks for Act 1

Version 0.8
First public release

PkR