The RS2 inlet seems to be working well with the engine modifications too.
Yes, it is very good with high lift camsshafts too! Here are my most current engine spec:
Engine:
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JMS RS2 Inlet Manifold
CNC-machined cylinder head
CatCams (304/304° - 12.45/12.45mm) with adjustable vernier pulleys
CatCams uprated springs (single)
Supertech valves
Solid lifters
H-beam forged con rods with ARP bolts and ACL bearings
Clio 197 pistons (give 12.5:1 when installed with Clio 172 head)
Megane 225 injectors @ Jenvey steel fuel rail
ARP main and head bolts
Kent competition cam belt
Athena Racing MLS gasket
Pure Motorsport AirCon and PAS removal kit
Transmission:
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TTV Racing ultralight flywheel and Helix 184mm clutch
JC5-129 gearbox with Gripper LSD (30/65 ramp angle and 4.33 main gear)
Ceramic coated synchronizer rings for 3-5 gears