318 Rebuild - Upgraded Parts?

I spoke to a local Engine Rebuilder today and was quoted $2500 to stock rebuild. He said he would subtract price if upgraded supplied parts were used. I have stock 340 exhaust manf. that will be used with dual exhaust. Looking to have something as a cruiser with nice sound and able to pin your head back and light up the tires - no racing. What can I add to achive that or what can I have him machine, want to keep on the Low$$. Suggestions needed

Thanks,