Traction Bars for II.

Read an artical in October Car Craft about Traction bars. The car in the artical was a 67 Rambler. The car picked up .38 seconds in the quarter using Comp Engineering traction bars. 1.96 60-foot to a 1.75 60-foot. Are any of you using traction bars on a II and if so what kind?? (Comp only lists them for 65-73 Mustangs). Also for those using them, do they affect the handling negatively??