I remixed this direct drive adapter for my Ender 3 V2 from this thing: https://www.thingiverse.com/thing:4787846 I added some extras to fit my printer better:

• cable guide + ziptie bracet
• some structural braces
• small cutout for extruder wheel

Length fits any fan housing, i made it for briss moto mit 4020 fan. you need to print it with the supportbraces down and use treesupport. after that yo press the spacers from the xcarriage into the rould holes until they ar flush with the front.