If you are going to change all that you may as well just get a replica, (although I don't know if they are doing 46 yet) Because it will only be original once, I have a 216 in my truck it does just fine, It isn't quite stock, but it is at least era correct. I'll be a bit happier with the 3.55 gears if I ever get a chance to install them. The only items I have changed were safety items, I installed seat belts, electric wipers (I live in seattle) I have a fresh air heater to install once I get it all cleaned up. I am contemplating disc brakes up front, although the stopping power is just fine as I can lock up the tires, not much point in going any further than that. I can do 70 mph as it is and in one of these is fast enough, not to mention that is the speed limit.Although I keep it at about 60 for now. The question is do you want a 1946 truck or something that just looks like one? OH YEAH it cost a lot of money to rebuild one of these engines, I don't know how much I have in mine, and I don't really want to know....