My Roush 402 R has been great (so far); no
oil leaks or any other problems. It is 7 years old, has been tracked and pushed fairly hard (occasionally), a good bit of stop and go driving on the street (has about 15,000 miles). It does not like it much under 2,000 rpm as it gets a little trailer hitch jerky. Does not overheat, crazy fast and sounds great. i thought about the 427 sb Roush but there were a few concerns.