Stall converter and shift kit?

[lukecp]

Well, my truck will be needing a new tranny soon, and i haven't decided on either rebuilding my TH350, or spending more money for a fresh 700R4. If i do the TH350, i was thinking of adding a mild tourqe converter with a little more stall speed than stock. My 350 is pretty mild, the cam has 204/214 duration, .443/.444 lift, and around 270 degrees of duration. The rest of the motor is pretty much stock, except for headers, a edelbrock intake and carb, and HEI. I have a 3.07:1 open rearend. The engine feels really "tourquey" just about anywhere between 2200 and 3000 RPM's The stall converter i was looking at is either a TCI Sizzler, or Saturday Nite Special. It dosen't say what the stall speed is for the Sizzler, but it says the Saturday Nite Special is around 2000 RPM's. If i get a stall converter, and power-brake the engine to around the stall speed of the converter, before the tires start to squeal, will it give me a significant improvement on my 1/4 mile times? Will the stall converter slip more than stock when i am driving around town, or on the highway, causing me to get worse MPG?
With either tranny, i want to get a shift kit. Which would be better for me, a RV-Heavy Duty shift kit, or a Street/Strip shift kit? I would like the truck to shift hard, with a nice bark or the tires in the 1-2 shift when i mash the throttle. If i get the Street/Strip shift kit, will it cause damage to my driveline?