I have a full TRD pro setup on my 4th gen v8. I only paid 300 for my stuff with 5k miles on it but I got a great deal. I did however change the front coils to King 650lb 14 inch coils versus the 600lb 13 coils. It sat a little low with the pro coils. You will also have to modify the bushings on the front shock and tower on the rear shocks to get them to work.
Also I'm stationed in California but visit family in Phoenix like once a month so if you want to check out the ride with the kings up front lmk.