First question is... what do you expect to run.. a
5 point roll bar is required to 10.0 then a cage is
required... a 8 point is a nice roll bar to stiffen
up the car... I like moly due to it being lighter
than a mild steel bar.. BUT moly HAS to be tigged
so if your paying for welding or doing it yourself
makes a big difference.. moly cost a bit more than mild
but you pay for the weight... moly is about 1/2 the
weight(steel weights the same but moly you use 1 5/8
diameter at .083 wall.. mild is 1 3/4 at .135 wall)
so you can see the difference in weight