Plenty of ways to spend a lot of $ on detailing products- I'd recommend getting a couple bottles of Meguiars- one for leather and the other for vinyl and rubber.
Clean everything really well and gives all surfaces a good coating of product . Unless the leather is damaged you'll be able to bring it back to new if you keep wiping and wiping and wiping until all the grime is gone. The Meguiars is okay/cheap and easy to get- while your waiting for those bottles to empty - do a YouTube search for some higher end products like "Adams" polish and detailing kits- you will see how for a reasonable cost you can get some much nicer results if you send away and get the "good stuff"
Vararam Air Grabber, Vararam Power Chamber, 87mm TB, Diablo Tuner with HemiFever 91 tune, Magnaflow Muffler, Boss 338 22 x 9.5, Toyo Proxy 305 45 R22, GroundForce 2/3