Question about Radio Install kits for double din radios

[kustom play]

so im new to the whole "radio changing thing"

radio is not usually on my list of things to change (still have my stock radio in my 92 MR2...... I know how bad)

but i got this good deal on this Pioneer AVIC D3 and im looking for the best kit to mount it where it looks like it belongs in there

i see things on ebay like "toyota radio install kit"

i really have no idea wtf i need

any help would be great

thanks!