Volvo's have plastic end tanks and under high boost, tend to burst. Quite a bit of pressure drop also. Some of the Ebay I/C's are decent. I have a large NPR in mine but they run in the $150-$200 range. As mentioned, the TC I/C's are small but good. Well designed. Minimum pressure drop and bolt to the top of your motor or can be mounted in front. I have one in great shape that I'm selling for $25 + shipping. If interested, LMK.