Newbie frame width question

[sstock]

Here is the diagram I have used for years. I was looking for something in another file and found this. I built my first T-bucket frame in 1969 using these dimensions. Since then I have built at least 8 more plus 4 C-Cabs. This basic design will make a car with a wheelbase of about 96 to 102 inches, depending on the type of front suspension used and rear axle location. With a standard T-bucket body set back against the kick-up and channeled the depth of the frame rails, the frame is the correct width at the firewall. If you are using one of the stretched bodies that are available you would need to lengthen the main rails the same amount as the body stretch.
View attachment 7305

Meangreen, is that using 1-1/2" wide tubing?
Sorry Dirt, I just saw you asked the same

 

[meangreen]

2" x 3". Either 1/8" or 3/16" wall.

 

[meangreen]

1 1/2" x 3" will work, too, as long as the outside measurements are kept the same. I like 2" x 3". It's stronger and I like it's look better, but that's just purely one person's opinion.