i think that the 6.5L turbo might be a bad choice of turbos actually.. they are super tiny little turbos and IIRC they only ran off of one side of that engine???? so really you could put on something much better like an HX35 off of a cummins and have a more reliable turbo. It might spool a little bit later and shift your power range up a little, but thats better in a gasser IMO anyways. I never have liked those little bity turbos. wonder what one could do with like an HX40 or an S366.. move some major air in there.