Bit hard to see and this was on my old engine.
But its a S1 Pace charge cooler with a S2 Radtec Cooler!
The only reason i done it was to be diffrent the highest inlet temps my collins monitor has shown was about 32c flat out on a hot day so it works very well. The engine at the time was Pushing 298bhp and 360ftlb
As for inlet im not sure what to run yet.
Jim