You can try googling for the KYB shock absorber line-up PDF (from their site). You'll get an idea of whether your car is sharing parts with other Toyotas.
As for the ride getting stiff, maybe the Camry's overall suspension design can handle the stiffer KYBs & H&Rs. The Rav4's OEM setup is already stiff that's why ramdam na ramdan ko ang difference - hehe.
Tokico does cater to other brands too... you can try asking Speedyfix if they can source out Toxico shocks for you though.
Edit:
Here's KYB AU's website, the parts available there are also the ones here in the PH:
http://kyb.com.au/part.htm?http://ky...der/shocks.php
I tried looking for your Camry, but wala for your model...
For the US available KYB... here are the part numbers:
SM5423 (front) & SM5175 (rear)