Speaker installation...

Question

i hav a 2007 ford f150 supercrew with standard 6x8 speaker openings in all 4 doors. i recently purchased jl audio zr650 component speakers. due to availability of the 6x8 version i had to settle on the 6.5 inch speakers. just curious as to whether installation of these speakers in the front doors will present any major problems and what the best way to go about it is.