340 built engine

i have a date code 6/26/69 340 that has been built. it is .030 over. 13.5: pistons. j heads with 2:05 valves,double springs,adjustable rockers. double roller timing chain.
the engine was built, installed in car, then sat for 7 years. i pulled the heads, and everything looks perfect inside. also included is a holley strip dominator intake and holley 850 d.p. m/t valve covers. the p.o said it was dynoed at +/- 500 h.p

looking to get 2,300.00 located 30 minutes from martinsville international speedway in va