340 For street duty
I would go with a high volumn pump and stock pan, I used a milodon pan and am not happy with it, it leaks. Only downside to the stock pan is that it is no baffled.
I run my 340 on the street all the time it's:
stock x-heads
speed pro forged pistons
xe-268 cam
650 holley DP
Eddie perf rpm intake
tti headers
msd 6al box and dist.
runs great, no problems.