N64 CD64 power regulator replacement.

After doing a whole lotta work to it I was finally able to get a broken CD64 to work properly. Now I'm in the process of doing more upgrades. I got one of these the other day :
http://docs-asia.electrocomponents.com/webdocs/12b2/0900766b812b22d9.pdf and its now replacing the 7805 voltage regulator. This is cutting around 65% of the known CD64 overheating issues and its working quite well but now I'm looking to replace the remaining 3.3V regulator (LM317T). Is there a modern IC that I can use as a direct drop-in replacement?
Any help is much appreciated and thanks in advance. Also, just wanted to say I'm extremely happy to see the site back (just wish I could get my blue skin back again )

Here are some pics of the before and after:

 

Uhh.. the LM317 is an adjustable regulator.

I'd be sceptical about noise from a switcher myself.

 

true dat no biggie it seems to be happy as it is. Replacing the 7805 however has made a huge difference, the heat dissipation is abysmal. I've been playing games for hours, less heat less problems.

 

Alright, replaced the much needed cartridge slot connector and installed a better quality ram simm conn. Now, I've read somewhere that the cd-rom type compatibility can be picky and that was no joke. I just tested around 10 older/new cd/dvd rom drives and only one worked with no issues out of the bunch (it also happens to be a no name cheap Chinese brand cd-rom). Perhaps is looking for a particular, older, slower drive I don't know. Does anyone knows the drive/speed cd-rom types that these used to ship with?

 

I think, in general, people don't consider the noise with switchers. I'm generally against the change for that reason. However, if there was a poorly designed circuit in the first place with heat issues, it's a good argument for doing it.

I wouldn't know, I've got two Dr. V64s