need help on build 440

I think you've been badly misinformed about the 360 engines. The big difference between the 340 and 360 is that the 360 makes it's power/torque at a lower RPM, which is EXACTLY what you want in a street machine. Everything else being equal, the 360 will be quicker than the 340 every time. :) I've been running a 360 in my 66 Valiant for years now, and it's a formidable sleeper at the lights. ;) I've also owned several hot 340's over the years, so I can make comparisons. :sleepy1:
I've driven through Yorkton dozens of times over the years. I'm about an hour West of the Sask border in central AB. Good luck with your project.