neather motor .... it came of a 80`s camaro from what i was told but its going on a 87 one pice seal built roller lower end im guna have the heads ported and put roller rockers on them thats it as fare as for the top end .. so im gueing its kind of like a l98 set up? "what about a stand alone system" exactily but who makes one that will work with the tune port and how much i couldent find one