Hi and welcome to mightyram. Your truck looks nice and straight. You're not going to find a 'perfect' seat for your MM but it's nothing you can't fix with some steel plate, a handful of nuts and bolts and a drill to adapt frame rails. I'm using old Peugeot 306Xsi seats in my Gen 1 and they are hell low to the cab floor. The drivers seat has the added bonus of height adjust. You can use 60 profile tires but they may look tiny on the truck, especially with stock ride height.