upgrade the dash 3-1/2" coxal to 4" componet

[ash-man]

I've notice that all the 3-1/2 coxal speakers on the market all have a power rating of 20-50 watts and qualty is 2 out of 5, so i've bought a set of PVF 210 mb quart 4" componet speakers. the demensions are 3.96" total rim to rim. Can the dash be modded or the basket of the speakers to fit and still keep the grill tight and flush? does any body have exp or ideas?

[Cool_V_300C]

I think you'll have to use the search function on here. I know at least
one person posted after making modifications to put 4's up front. He
even included pictures.....

Hope it helps.