Fit 5.25" in 6 x 4" space at the back?

Good day all you sideways people

I have gathered that it is possible to fit 5.25” speakers in the doors 6 x 4” space with some modding. Can you however fit 5.25” in the standard space at the back(those plastic holes 6 x4”) and still close with the standard cover?

Thanks

i fited that size in the back had to mod the mounting frame and fited the grills back like normal

I recently fitted 5.25" in my back panels, i did not have to cut or modify anything, just had to remove the plastic mounts and drill in 4 new small holes and here we go:

Its nice and neat and should give better sound than those oval speakers.