Replacing rivets with bolts

[bbcmudtruck]

I have removed most of the factory cross members and replaced them with aftermarket pieces. I have drilled all holes out to 7/16 and installed grade 8 hardware. Bolt, washer, frame, washer, lock washer, nut in that order. My concern is the possibility of having nuts vibrate loose. I intended on using Loctite as well as the lock washers, but I've heard of cases where the nuts still backed off. Does anyone have any experience with "top lock" nuts? I've been told that you can reuse them as opposed to nylon. I'm leaning in this direction unless there is a better alternative. Should I opt with or without flange? Thanks for the help!

Here is an example of the top lock nuts:

Grade G/8
http://www.fastenal.com/web/products...endingMachine=

Grade G/8 with flange:
http://www.fastenal.com/web/products...endingMachine=