Which Dampener are you guys using?

Actually now looking at the summit SFI racing one for 160, but I wont need to re balance if same weight right?
This what I want:http://www.summitracing.com/parts/SUM-C4277/

This is what I have: http://www.summitracing.com/parts/SUM-163273/?rtype=1

Mine in diam. is: 7.250

and the one I want is :6.610

does this mean the weight is different?


That is the one I have. Only thing is it is hard to see using a timing light but how often do you set the timing? got mine around 34 degrees and forgot about it