I highly recommend this kit
By
Steve B.
on
Verified Purchaser
If you are wanting to upgrade your 88 twin cam. I highly recommend this kit came as described. You will need to get a gasket kit for the rocker boxes. Now I have enough power and speed that my buddy can't just leave me in the dust with his 117. The S & S 100" big bore kit is worth every penny I will assure you that you will be as impressed as I am with the performance increase.