Everyone is so picky now Steel Construction U-channel Hot Rolled would never fly with the Racers.yeah, many of the older car frames do require significant upgrading if you need to race the car,
Ive carefully TIG welded sections of 2" x 1" / 3/16" thick steel, and boxed existing frame channel,
using the added steel, into frame channel into selective high stress areas, and it makes a very noticeable improvement in handling and the suspension stability under launch, and hard braking and cornering.