HSTuners - Wiring harness?

Ok, see if you can follow this. I have a 91 standard (4speed) hatchback, you guys might remember me from before, i was on here. My project got pushed back due to a mini me on it's way. Anyway here's my question, i was going to get the HASport wiring harness for a b16a, it's $275. I was thinking because it's 2 seperate harnesses, 1 for the dual point to port injection, and a sub-harness for the vtec, if i could do this to save money. Get the harness for the injection from an Si, and get the Si sub-harness ($75 from HASport) for the vtec. Would this work? I can get an Si harness for free from the junkyard so i would save $200. Thanks in advance guys.