What kind of ones do you want, trd style or another? And what part of the country you in? Theres plenty of places around the country thatd sort something out for you but id start checking the different websites first to see if you can get cheaper there first. Then you could try the likes of CDA in Dunboyne. They can get catalogues dedicated to parts for altezzas, im waiting on my copy to come in from japan. Theyre all in japanese but every item has a good picture of it fitted to a car
Theres loads of stuff in it so itd be a good start if you're not sure what you want to go for.