Power stage and radio/CD changer installation Omega B Caravan

The original radio (CAR 300) and the original speakers are garbage, deshalp I want to transplant my proven BluePoint RCM104 Paris. he has a changer with him, besides I already have a Crunch V3004 4 channel endstage, Hertz HSK165 2weg Speaker (16cm+Horn) for front doors and Boston FX5 (13cm Koax) for the rear doors. The radio is already exchanged, unfortunately the original cable tree is unzure My real problem is another… Originally I wanted to place the ENd stage under the driver’s seat and the changer under the passenger’s seat, but today I thought that there wasn’t really much room there. From the seats there is a joint down, the seat height adjustment should be. I am now looking for a convenient place, or an idea, how I put the stuff under the seat. definitely wants to be able to continue to use the loading area fully and without having to put anything down the seats can fold over. thank you for ideas. sers