I'm running magnum heads on ~10.8-11:1 360, cam specs @0.50 are 224/230. Definitely have to pay attention to the tune, but timing cranked down to 30* total it runs great on 93. Kicks the tires loose on demand, 11/12 mpg on the highway, throw in higher octane and crank the timing back up at the track. 904, stock stall, 3.55s