A dual pass intercooler like this is the most efficient design for street type application, but there must be enough room in the front of the car for the height.

As you can see, the Denso intercooler on the right is not as big in core size as it appears, & it's only the actual core that does 99% of the cooling. Have to be careful or you can be misled into thinking the oe. 'cooler will be more efficient than it is.

Makes for a very efficient, compact design with very short pipe lengths for a front mount.