thanks Bruce, I checked out the thread and it seems like your kit is the way to go. Most likely ill be looking into getting one shortly. I noticed some of the members mentioning a change in shift points as well as shift firmness. So if I were planning on modifying the govenor in order to raise my shift points, both part and full throttle, should I wait till after I install the shift kit, and test it before messing with the govenor? Right now, if left in the O/D position, it will upshift WOT @ 4500 from 1st to 2nd, and 4000 from 2nd to 3rd. Id like to raise those automatic WOT upshift points by roughly 1000rpm. Can the kit achieve this without govenor modification? should I wait on govenor mods till after the kit is installed? The car is a 73 vette with modified 350 and 200r4 trans with 3.90 rear. Again, its not a turbo buick valve body trans, just a standard 200r4. Great trans, i love it. Im glad my bro talked me into using the 200r over the 700r. Thanks again for taking the time to share your knowledge with me. John