hi there i am asking a question inquiring if there is any difference from a vr ss 304 engine manifold to a vt manifold as i have looked on ebay and most people that are selling them are saying v8 5.0ltr manifold fit vn,vr,vt is this true as im putting a vr ss 304 into my 98 vt and need bits to make it run need to know if i need to replace the one i got with engine thanks.