Ok, O.S. says the best pipe for thie engine is the "O.S. Tuned Pipe T-1040 L52 Left Side". So I will orde that tuned pipe.

They (O.S.) then said the header simply depends on what the car calls for.

So would the "RB Concept Polished Exhaust Manifold .15-.18 (Revo/On-Road) [RBD01801P]" that is made just for this engine be the right shape/fitment for the RRR?

Thanks!

EDIT: Ok check me on these 2 before I order one of these sets:

Spring Connect:
Header - "OSMG2608" T-1040SC L-52 – 12TG/TZ
Pipe - "OSM72106310" T-1040SC L52 Left Side Tuned Pipe
Exhaust Seal - "OSMG8871" O.S. Exhaust Seal O-Ring (2)


OR

Non-Spring connect:
Header - "OSMG2617" M1001 – 12TG/TZ
Pipe - "OSM72103051" O.S. Tuned Pipe T-1040 L52 Left Side
Joint - "OSMG8875" O.S. 15RX Joint Tube
Exhaust Seal - "OSMG8871" O.S. Exhaust Seal O-Ring (2)

It's better to order the non-spring connect right?