Just finished up the guard for my dad's car. 100% bolt on to the chassis.
Test fit before I had the collars to weld on and bolt holes to attach the channel to the plate:
Lower collars that my dad picked up somewhere:
Finished assembly:
I also attached a quick cad sketch of the pieces as
I made them to fit my dad's car. It should give you a base point to start from if you need one. Some of the dimensions will more than likely need to be tweaked to fit the items you use in your build.
Andrew