You must have a different source than I do. I've tried two different brands and they were both AWFUL! The first was so crude looking, it appeared a child must have cast it in a mud puddle in his back yard. I could have lived with that but it wouldn't even fit over the outer head studs without using a spreader. Also the #6 port was only 2/3 the size of the other ports so you would have to take a grinder to it to get any kind of equal flow. The second one looked lots better and actually slid over the studs but if you bolted it to the intake evenly and then sighted down the head surface, the intake and exhaust surfaces were on different planes so you would have had to resurface them. Also, when bolted together, the centerlines of the intake and exhaust ports were a good 1/8-1/4" off from stock so you would need to do some major port matching. Needless to say, I sent them back. I would either find a good used one or get headers before I would use either of the ones I've seen. Do you have a brand you can recommend?
