Spent some time recently trying out adeyblue's GMCreator menu tool, so I tidied up the Acura dealership:
While I was in there, I took the time to sort out the NSXes too. It turns out that the '1991' and '1997' models are actually just an automatic 1997 and manual 1997, with the small mistake that the automatic still has the 6-speed manual. I deliberated for a while on whether to change the menus to read '97 for both or whether to properly convert the car to 1991 spec, but ultimately I decided to convert it, to make it more distinct.
As well as the correct 4-speed automatic, it's now got narrower tyres, smaller, 5-spoke wheels, and a different set of colours. I also switched both cars from Japanese tail lights to the all-red Acura version while I was at it.
Instead of keeping the same racing modification as the 1997 car, I grabbed the Acura version of the Honda NSX '90 RM from the unused files in the initial Japanese release of the game, and updated it with US tail lights to match.
Finally, I merged the black colour from the NSX Type S Zero RM into the otherwise similar Acura 1997 RM, and gave that US lights too.
As you can probably guess from the dealership above, I'll most likely be removing the fictional Acura versions of the NSX-R, Type S, and Type S Zero. Players can buy the original Honda versions in GT2+, so there's no need to duplicate them into the Acura dealership for US players any more. Removing them also frees up a tiny bit of space for car parts, which was going to become a pressing issue for the next version.
I've started on some other menu changes too, which I'll show off when they're more complete.
is there any patching tutorial?
As mentioned in the readme file, it's just an xdelta patch to apply - there are lots of universal xdelta tools out there with their own tutorials on how to use them.