Ah! Belt and suspenders!

The 2-piece Dynacorn item should work well for you.

 

Having a big stroker does that to a guy.

 

Torque boxes add strength at a critical point for flexing. Just like sub frame connectors, they add the rigidity where it's most beneficial.

 

wouldnt it be a piece of cake to fabricate some torque boxes out of plate steel?

 

sure, you could fabricate a set, but why hassle with the headache of dealing with heavy gauge steel when they sell replacements that don't cost all that much?

 

I'll promote what is admittedly my own very strong opinion on this matter that many people here and in other discussion forums often disagree with.

If you fabricate your own little triangles for the front boxes and install them you will inevitably use your own car as the template and create something that easily slips up and into place. What happens if your car is not put together right? Time takes it tolls, the rails might not be straight, the rockers might have moved, the pans might be in wrong, the toe board extension in correct (a laundry list of normal and fringe cases could be listed) you would simply be further cementing an error into the car. Now granted if you were meticulous, pulled out the shop manuals and measured confirming every diagonal that is obviously a different story but in all honesty how many people really will do all that?

If you purchase the pre-fab ones it is in my mind one more additional simple and complete sanity check...if can get them to slide up and into place your car is relatively close to tolerance. If you can't you have to start looking more closely and inspecting core pieces of the car.

This opinion drives my disagreement with people who also recommend to cut the pre-fab t-box in two and install it in two pieces (which is usually my largest point of contention in post about installing front boxes in cars).