what to do about my transmission

[Lite_Drizzle]

Im currently building a 3.1 bored 20 over and and wondering howd i go about putting some sort of auto lock or full lock on my tranny what brands would be options to do it would it be custom work its an hydromatic three speed auto but looking to do a 5 speed

[geoffinbc]

What vehicle? What transmission?

I assume your talking about a torque converter lockup, is this correct?