My 69 road runner cowl started to crack near the windshield so before I fix and repaint the area I am pretty sure it's time for sub frame connectors.

I am taking the car down next week to my friends muffler shop to get a custom made exhaust system and my buddy said he can weld me up a set of sub frame connectors at the same time. He said he has done a few of them on E-bodies and he uses 1 x 2 box tubing. He showed me some photos and it's a pretty nice clean look.

So this all sounds good but I was just wondering if there are any downsides to having them installed?

Thanks for any opinions
Stu