Not sure of your comment. Theres little call for use of a trans brake on the street. If you do use it, it would be from a stopped postiion and then it does not matter. Plus most trans brakes only work in the first gear position. What makes the modern autos so good is the newer technology in the torque converters. They give you a normal auto trans operation for street use but can stall up at footbrake and higher on a trans brake, for fun mode. And with the right builder that really understands the size versus stator and turbine fin angles etc, can be really efficient on the top. The really nice thing is the trque multiplication of the converter during stall. A good converter can be multiplied as much as 2.1 to 2.5 times your torque if designed correctly. The real winner is the softer punch at launch of the converter where you are rippping things apart with a clutch drop. Don't get me wrong. I will for ever love the launch of a properly built manual/clutch car and the real banging thru the gears. And I really love doing the shifting on the street. But a correctly designed (for the application) converter and trans brake is hard to beat. Now you throw in a turbo application like mine will be, to truly get the most out of it you have to use a converter and brake (or footbrake under certain situations) to get the most out of the turbo. The turbo really needs the engine to work and make exhaust pressure to spool up the turbo. Freereving the engine will usually not be enough to get boost up unless it is under sized at the turbo.
OK enough babbling. For a pure fun car you can run anything. A full manual for the shifting fun. A clutch turbo/flite for the fun and nostalgic side, and a built auto/converter for fun and a little seriousness if you want to run some at the strip. If I were not building a turbo car I would be running a manual. But the turbo, to be able to really wring it out at the strip, needs a converter and auto trans. My '73 TA had a full manual TH400. Which required me to shift it up and down all the time. So it did give me some control and something to do while driving around. Nice thing was, my left leg never got tired, heh. Mark L