Just came back from John's at sea creature, He had been telling me about a new mod kit a few weeks ago for maxijets. Well it came in today. Construction/machining is superb, works on all maxijets 400,600,900, and 1200's, has 1600 gph flow and later a upgraded prop will be released for the 1200 to do IIRC 2400 gph. We must have turned it off and on 20 times and everytime is started up in the correct rotation ( it has a reverse stopper ). Takes literally 10 seconds top to complete the mod. Enough talk on with the pics.