oil system, what to buy??

Here are a few more questions for you guys. 8)

Crank Scraper - Does anyone sell these for a SB Mopar with a 4" stroke crank?

Oil Pressure By-Pass Spring - If I use the HV pump, should I also put in the high pressure spring?

Pump Priming - I saw in another thread I can use a 5/16" hex rod and a drill motor to prime the oil pump and oil galleries. Is this all that's needed? Do I need to pre-fill the oil pump before I even install it in the engine?

Oil Pressure Gauge - I don't have one yet. I know a mechanical gauge is more accurate, but I don't know if I want pressurized oil inside the car. So I'll probably go with electric. Where is the best place to install the sender? Can you still retain the stock sender for the idiot light?