Take a quick look in his engine compartment. If it is a 93, it about has to have the twin turbos. Just look for the turbos. A couple of years ago, I had a very new R62 (285 hp) running in the same field as a very polished N7. Both had the same size of headers and were running in good wheat. They were a dead heat all around the field. Switched drivers and still had the same results. Keep in mind that th 62 had a lot of rough chrome in it yet which when polished will increase capacity. A Duetz V8 with the turbos and in good mechanical condition will run very close to the newer R62s. When I say good mechanical condition, I mean engine fan, injectors, valves, timing, etc. HTH kelly