It may not last as long ( its making its power by 6800 so not to high of revs), but it doesn't weigh as much either
http://www.precisionraceengines.com/
They did a very nice job on the engine and they stand behind their work. Engine was delivered on time as promised. I did have a few issues with the engine; however, it all stemmed from the heads. (AFRs problem, wrong valve seals). Precision replaced the seals at their expense even thou the heads came assembled from AFR.
I will try to post some picture tomorrow.