I came up with a solution to my frame issue. After doing some trigonometry, I worked out the dimensions I needed to change things back to. Since I am not the best welder in the world, I opted for more bracing. Instead of placing that bracing outside on the joints like Street Beast did from the factory, I opted to place mine inside.
With a plan in mind, I blocked the chassis up, and cut the main chassis away from the front crossmember.
After some measuring, I found that the Street Beast "main" chassis rails are 2"x4"x3/16". Time to buy some materials.
