depends on the model... but if you have 6.5 in the rear then you have a DX or LX... which means the same size is in the front.
The EX and SE models had 6x9 in the rear and 5" in the front (NOT 5 1/4"), 5's are pretty rare speakers.
Although your user name is 92accordEXwhite... so what model car are we talking about here?