My regret on the weld in was the total weight and size tubing used. I could have gone lighter weight, less tubes and smaller diameter but elected to go super stiff and safe. I would do it differently if I could.
My street car has a bolt in cage and I love it for street but its also only the back half of the car and I can feel the chassis flexing.
Hope that helps.
Ah I always wondered what half cages were like..
You guys should check out the SHG DC5 cage, The thing is a work of art.
Heres the link:SoHonda Garage's Circuit DC5 Build - Honda-Tech
Cage building starts on page 10