At Synergy Engines, we do things by the book!  We utilize AERA, OEM, and custom aftermarket manufactures to create the perfect custom engine build!  All of our engines come with the guarantees which are covered below!    We do not offer any half builds here, all Synergy Engine brand builds always will have new parts, and include all blueprinted specs from the machine shop and assembly room.  Here is a list of what we Guarantee with all of our builds!