[403olds]

Hi,
Ive got a 79 ta with a stroked olds 403. My torque converter is starting to give me problems. Im just looking for some personal opinions on what I should do. Right now Ive got a turbo 350 with a fairly recent rebuild(about7,000 miles) The previous owner put a 4.11 Eaton posi rear end on it. I love the accelleration I get out of the gears, but the car tops out at about 90 a 5 grand, sure it gets there in 8 or 9 seconds, but I don't like racing the motor that high just driving down the highway. I have 3 options that I can think of... just get a new torque converter and call it even, shorten the driveshaft and put in an overdrive unit(the most expensive, it like to stay away from this one unless you guys really think its the best idea), sell the 350 and get a new 700r4. Im looking to get the same accelleration(or pretty close) to what I have now but not cruise at 65 at 4 grand. If it makes a difference, the motors not stock, it puts out 310hp at 3700 and 426 ft-lbs at 2800. I would greatly appreciate any suggestions or opinions. Thanks