I did some analysis while playing THPS8 on PSP, and I came to realize that there are a lot of content within this port that were originally made for THAW.
This kinda means that at some point, THAW was going to be ported for PSP but was scrapped for the sake of releasing THPS8 instead. It's like THPS8 is disguised as THAW for PSP.
Here's what I came up with:
- Several THAW animations still exist and are used in game (off board revert/ board hand switch, wall grab w/ feet against wall, taunts can be seen done by the NPCs around the player, etc)
- Several sound files also exist and are also used, but they're kinda pixelated to fit into the PSP.
- A lot of characters and several skate levels were ported and are used in game which can be seen here:
https://imgur.com/a/vM8afThat's all I could find. Enjoy and thanks for reading!!!