Hey,
Very nicely done, congratulations on the new install buddy.
The cubby hole in the boot floor is ideal for just such an install, proven by your pictures but for me I have opted for the space saver and so it's ruled out for me.
There is no point asking if it sounds good as I am sure it does
I know I will be looking out for a listen of one of these processors even just so I know how good they are and to be nosey.
Have fun.
Ian