A Couple Random Questions

[blown240]

I searched, but didn't find any solid answers. I have a few random truck questions.

61 Panel, 350/700r4

1. I need a bumper for the back of my panel. Looks like a front bumper is the closest thing I can get. Will front bumper brackets work in the rear, or should I make my own?

2. My truck turns really really easily now that I lowered the front about 4 inches. I haven't lowered the rear yet, but plan to in the next week or so. I assume ackerman angle is too steep now and thats why the steering is so light. How big of a problem is this?

3. Im adding an expansion tank to the radiator because its been hot and about 3" of coolant had burped out. Will a basic Dorman overflow tank allow the coolant to be sucked in when the rad cools down?

Thanks!