Subaru Impreza 99 Front Speaker Adapter

I found some models here but none is fitting in the front doors of my Impreza'99 car :/

So, with my poor knowledge, i decided to start my own adapter has i could, but finally get something descent, and nowdays i have two new speakers in my front doors ;)
It will fit in 99/00 models, but also 1996 ones i guess.

I decided to use PETG because PLA is risky when it's hot outside.

Notice: on one picture, I put a screw at his wrong place (on the left), of course the choice is free ;)