Holley Street Dominator Z Series Question

I have an 86 318 in a 83 Ram W150. The truck was originally a 6 then was swapped to a 360. The PO swapped in a 318, not sure why maybe there was an issue with the 360 but he did say the 318 came from a very well maintained and completely stock truck (stock intake and 2BL). When he installed the 318 he wanted to do a 4BL upgrade so he used the Street Dominator Z series from the 360. I've searched high and low, I know there is a lot of talk about using the SD Z series on a 18 because it matches the port size, but my question is did they make a SD Z series specifically for a 360 in the 80s? And if they did, I could potentially have some port mismatch and oversized runners jacking the power band up. I already have a hot hard start issue and I'm going to try a insulating spacer on the carb, so if I'm pulling the carb I may just swap intakes. Maybe use a Weiand Stealth or Eddy Performer.