1969 Dart 340 cam selection help !!!

"Mostly a street driver" and .600 lift roller usually don't go together. If your shop charges more to install new rod bolts and resize rods than buying new ones, their prices are too high. The stock connecting rods are some of the strongest rods from any auto maker. Properly prepped, they will have no trouble seeing 7500 RPM on a regular basis. They are also probably made out of better metal than almost all but the most expensive aftermarket rods. Throwing lots of money at something is certainly your choice, but remember, money is no guaranty you will have a good product in the end.