your upper pipes should be fine. pipes are pipes, and most people and pre-fab pipes use the hole under the fusebox anyway. custom pipes will have to be ordered for a few different FMIC's like the spearco's i believe. i had the GReddy upper and lower pipes installed, then i got the type-24 FMIC with only the pipes i needed. i think you would be in the same situation, that you would only need the pipes you already have.