Easy install and has run great for almost 600 miles so far. Only issue is that this new head (P75-9) comes with attached bolts/needs nuts for the exhaust manifold whereas the old head (P75-4) needed bolts. Had to slightly modify the heat shield to get it to fit under the bolts that stick out of this head. Fast response and order fulfillment, but beware Georgia fedex for delays
Went on with out a hitch receiving and return was very convenient.
Was surprised, although, I found it necessary to chase the threads for the exhaust manifold mounting bolts even though I used new bolts.
My questions were answered quickly on their website chat. I purchased 2 heads for my boat and received them much sooner than expected and at a reasonable cost. I've already referred friends to Allied.
Great commutation shipped head without gasket set called had them the next day