Yes, I guess I knew that, but I was thinking more of power potential. After new pistons,rods,ect. the L28 just doesn't seem to come close to the RB26. It seemed to me, that there must be a very important desgin change to allow that. 700hp sounds about the limit for the L28 and the RB26's limit is over 1200hp, thats a huge 500hp difference.