What more can you ask for

From memory the header length on the 086 and 053 Dynamites is the same, which is really what effects bottom end the most. The 053 is a mid range pipe and the 086 a top end pipe, so like Matt stated the 053 will have a tad more bottom due to it's mid range design. The 5 Ports have so much bottom end you could loose 25% of it and still have more than enough for most situations anyway and the 086 will draw more top end out the 5 Port and make it a screamer. Get an 086 for your motor, you won't regret it