SPL Parts can get you the Tomei cams and the JWT cams if you want.
http://www.splparts.com
The 256's make more power than the 264's on lower horsepower SR's. If you are looking for midrange and torque with an acceptable top end then look no further than a Tomei 256, it is a very strong street cam.
Do not overlook the JWT components, they are solid as well and offer a ton of choices. The S3's and S4's do very well on SR's and would be suitable as well.
I suggest upgraded valve springs for the JWT cams, but the Tomei 256's you can run well on stock.
I would suggest the following:
Tomei 256 PoncamsTomei Cam Gears
or
JWT S3 or S4JWT Valve SpringsTomei Cam Gears