if your lookin to have some decent power someday, then do the transmission right the first time. imho i think the tc lockup switches are like putting a band aid, on a wound, only for it to get worse. do some research on the various transmission companies, (DTT, suncoast, ATS, Gorend bros. , BD,) and choose the one that your feel has the best product, and best customer sevice, and go from there. call each company. all of the listed above, and any if didnt mention, they will take the time and answer your questions, tell them what power level your looking at in the future, and they can help build the transmission that suits your needs. i choose the company that i felt had the best product, it in my sig.
wes