Good question. Short answer is that we'd like to... but we got such a good source on these and purchased in such a significant quantity that we couldn't justify the extra cost. There may be room in the market to support something between this and GC's, but we'd rather crank these out for a good price for the ~600-650 whp crowd (which is enough for most people and stock engines) and continue to improve the GC's. We have a lot of developments coming out, this is the first of many.Why didn't you opt for larger? The flow surely wouldn't have hurt anything, and the stock Mani has such a huge air gap so plenty of space?