I have heard some very good things about frame locks. Korbach performance sells a kit. I think the site is Korbachperformance.com but I'm not sure. I have been wanting to put them on my car. The people that have put them on say it makes a huge difference in the handling. It makes steering extra sharp and eliminates the chassis flex up front. They are fairly reasonable for what they do and don't seem to be that tough to install.