i cannot begin to tell you all how pleased i am with the golden eagle robin subaru engine & drive train! the shipping was absolutely impecable, & the detailed instruction book was great, but ya really didnt need it because its so simple to install. this system is so smooth, quiet,greaseless & trouble free it blows me away. an easy 28 -30 right out of the box pullin 2 on our tandem! today i filled up at the pump for 55 cents the looks i got were pricelss!! oh yes totally american kit. if its the last thing ya do in life as motored biker please ride a golden eagle, you wont be disapointed! & no im not a vendor!! just a very pleased customer!!