Speaker Installation

[fxny12004]

Hello Folks, I tried searching for an answer around the forum with no success, so here it goes...

I want to upgrade the speakers in my 07 Sedan, and it has come to my attention that most 6.5 speakers wont fit in the front due to the front depth of most speakers. A crutchfield rep told me that there is only 0.316" between the door panel grill, and the actual speaker. My question is how did many of you install front speakers? Is there a way to actually make speakers fit?
These are the ones im interested in purchasing btw:

Pioneer TS-A1673R (Front)
Pioneer TS-A6993R (Rear)
(Are these any good? Suggestions are welcome, Amp TBD)

My other question deals with spacers. The rep told me that for the front and rear speaker i would have to fabricate spacers. Theres no DYI on how to make one for sedans, and the one for hb is a little vague for me. can anyone elaborate on how exactly they are made (materials, tools needed, instructions, etc)?

i realize i am a total car noob, but i really think i can do this due to the fact that i repair and maintain computer/ av components (IT tech) at a large university. I think all i need is some exposure and enlightment. I have to try sometime....

I bow down to you guys' ultimate wisdom and await a response


Much Appreciated!!!