The blacktop has lighter internals which happen to be also weaker, but it is a bit faster. No hurt if you're not executing any massive mods, but any forced induction and you'll be needing to uprate the blacktops internals. I used to be gonna return the engine, but at last, https://4a-ge-engine-for-sale47722.jaiblogs.com/53606072/top-guidelines-of-4age-engine-for-sale