Haha yea my old car was bullet proof. On standard internals (that i know of, it had a rebuild but didnt know what was in there) 250rwkw all day. Only problem was it didnt have a rev limiter. Cant count how many times that car saw 8500-9000rpm and it still went strong, of course these high revs were by accidents in 1st gear as first gear is over in a flash.