just remember sean760 these motors are a very rare motor. when the m/b decided to change the slk32 to the new body stlye and use a v8 instead of the v6 your srt 6 was using the last motors available. now with the split of m/b and chrysler it isnt going to be easy to replace these beautys. as long as you stay with bolt ons i think these motors are bullit proof to a point. when you start messing with the inside shaving parts to get every inch of power i think failure will rear its ugly head and getting a new motor today runs roughly 30,000$!!!!!!
unlike the chevy or fords of today with hundreds of thousands of cases there are maybe a few thousand of these motors? i dont know how many srt6 were built but there are were 2056 slk32 amg shipped to the us