if you go on crutchfield they will tell you which adapter you need, when I did mine I just chose the cheapest one that retained the alarm but not the steering wheel controls because the one that I needed to retain the wheel controls was too rich for my blood
sorry to get off topic for a quick second but I just noticed you were from mantua, i'm from bainbridge/auburn area. I didnt know anyone around here had a dmax that didnt think it was a cummins lol
The ones in the "Amish mafia" that drive and have the cars aren't actually Amish. The one with the dmax is Mennonite and Levi was never baptized into the church
When I bed lined my chrome bumpers I just took a palm sander with some 80 and 40 grit and scuffed the hell outta them then primed but bed liner sticks a little bit better than paint