Hey, I'm gonna be running a zz502 in a 69 Chevelle. I want this a daily driver (although it may not be), and want to retain the back seat. How much flex does a 4 point roll bar welded to the frame decrease? Is it necessary or can I just adjust the upper links and call it a day?? I really dont want to run the bar at all. If I take it to the track it will be for my own curiosity about the time. Oh, was planning on running 3.42 gears with the 4l80e if it matters.

none or darn near it
all its good for is passing tech at the track some are 12:99 and lower
some are 11:50 and lower
to stop flex you need to tie the front, center and rear together