Mike -
If your looking for the TKO hydraulics.....think 5.0 Ford. The TKO for the Mopars is a ford based unit, use a nice Tilton master cylinder and the new Ram throw out bearing and I bet you are under $300.00 for the whole enchilada. Remember the rod ends, turn buckle and mounting post that attaches to the pedal.....and use the existing hole in your floor and purchase the floor board grommet for the 4 speed from Brewers.
By the way, you are not tied to the aftermarket scattershields. Look at the cast bellhousing that Classic Mopar 5 Speed sells with the roller pilot bearing to get you going. $249.00 for the Bell. $65.00 for the roller pilot bearing.
Tony
Classic Mopar 5 Speed