Should I sell?

DONT SELL IT MAN
I sold mine 3 years ago and went with your plan and built a 360 that 340 was a 70 dart engine too
my only regret is I didn't rebuild that motor those old 340:s could take a pounding and buzz likea bee call me I might trade you 6800.00 in mine , its a rocket but I think the 340 woulda rocked it rebuilt , and try to find another 1 340:s Rock and you have room for nice headers your 3 k away from a 475 hp 340 then add the nitrious Your gone my opinion 340 lover