i have been sitting on a comp eng. torque for some time now... is it worth installing.. do the back seats have to come out inorder to drill the holes...???

 

Yes, you should install that bad boy now! That sucker will help you out a lot for getting off the line, (provided it is shorter than stock). That is one of my next mods, shorter torque arm, and slicks, I figure at least 3-4/10ths off my 1/4 mile times

No, the rear seats can stay in place.

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25th Anniversary Z28