Aside from a whole bunch of new gaskets, filters, fluids, breaks, knuckle job etc.
I installed some sound deadening. A layer of Kilmat with a 1 cm closed cel foam mat on top of that. I did the same with the doors, what a difference that makes! incredible.
In the radio bracket I installed below, so I can keep an eye on the transmission temp and have some power ports.
Music will just come through my phone and connect to a speaker over Bluetooth. How neat is that.