Oorgh. I wouldn't want to try it, it'd probably be do-able, but the suspension would take a heck of a battering. It would be a bit easier if you went the Sewingshields route, turning west just before Davy's Lee, providing you could get down that rubble strewn slope that masquerades as a track on the north side of the crag. Those around there all seem to use 4x4s.