If your thinking about using Rapido Marine do NOT do it. I purchased two long blocks from them and both had problems. All of the issue where due to Rapido's incompetence and use of USED parts. They also like to use non marine gaskets due to the fact they cost a little less. They like to charge you for work that they did not do like heads. Both sets of heads on my long blocks leaked oil from the valve seals and one had a leak in the head gasket. This all was after 3 minutes of run time on one and about 1 hour on the other. When you call them to get the issues fixed the do not answer the phone. If you keep calling they will tell you your unreasonable and void your warranties. I am the proud owner of not one but two $3000.00 plus install and removal costs boat anchors. Raul the owner is a liar and a cheat plain and simple.