OK, you have data for only 1/2 the reason behind having the side bars. The other is to stiffen the chassis. The X is much better as it ties the chassis in 2 different directions from the main hoop to the a-pillar bar (firewall bar).
1994 Undercover Chassis 125" altered
stack injected big block, soon blown and injected
Member of The Torque and Recoil Club
