i run a jp-2 on my 7 port. and it is the best so far. the 053 is said to be very good for both motors also. i also just got a 5 port and will trying a 086 pipe, and i was told that the 053 would also work with both motors but better for the 7. however this means to me that the jp-2 may also work, i will see how it goes this saturday. you need to run the restrictor for sure.