Upgrade Standard Speakers in 04/05 STI Type UK

[Clarky88]

Hey guys, im looking to upgrade my front and rear door speakers in my Impreza, i want speakers that will still be hidden behind the Door cards, to keep thta original look. im already running an Alpine IVE-W530 Double din head unit, with a Sub and amp in the boot, but need to upgrade my door speakers, and sort the system in the boot also, so it sits better. anybody have any idea on what works best in these? would like to go with hertz 2 way speakers, but unsure of the correct sizes and spacers to keep the door cards on properly. 

 

any helps appreciated guys. 

[Clarky88]

Bump

[AirGordon]

I did look at this. Most 6.5" speakers will fit, with a 19mm spacer. 

This guy used to 3d print them. https://www.ebay.co.uk/itm/283775912271 but I'll just use MDF when I do it.