What rpm do you shift at?????

68 F.B. Fish, 4 spd. 4:56, 340 030. trw 11.01, T/A heads, no longer rocker shafts, milled for blocks and roller rockers on exhaust and orig. offset solid lifter rockers on Int. ported for oval track, Hughes 245/250_560/575 lift solid cam, Eddy street tunnelram with 600 vac. 2nd holleys. I shift at 6800, Hits the rev limiter right now in 1st and 2nd, will probably set limiter to 7000 soon.