7800 is a possibilty i'd say, more than that and you want solid lifters if holding for long periods.

I pulled 7600 in 5th at brunters, recorded 174 mph (smashed straight into the 7600 revlimiter ) and still had 1/4 mile to go on my T4 / 8 greens engine, but 4x4, in the rain.

So 2wd in the dry with 100 more bhp and you'd hit 7800 no probs!