New c10 owner with new stereo updates.

[Johoevasmatrix]

So I’m looking to somehow stick two 4” speakers where the 4x10 sat in the dash I choose these Kicker 43CSC44 and will try to fabricate an way to mount them into the dash. I went with the kick panel route and will have the typical 6.5 in them. I have looked and most info I have found seems to be dated. Wondering if someone has done this what I should watch out for or flat out won’t work. It’s the two 4” in dash I’m concerned about. Anyway here is my eye candy.