BluePrint Racing is one of the highest regarded K-series engine building shops known. They offer services such as their popular "BluePrint intake manifold" which is a thorough port job on the RBC intake manifold. Their port job is geared towards the big boy K24A engine builds. The BPR port job requires the cutting and opening of the RBC plenum so the runners can be accessed more easily. Porting is performed and once done, the cut plenum piece is welded back into place.