Yeah you aren't kidding... I didn't include any final assembly or tuning. I'll add it on there to keep track of totals... I keep track of costs but this will be the first build I keep track with labor hour totals. I know someone in New Zealand with a turbo spark SJ and they are using a 144 solas with it 2" setback and said it works awesome. Had originally wanted to get a 148 but after hearing the 144 solas worked good on the SJ, I'm going to try that first. I already have the pump too so that's a plus. I have no clue on impeller. Big lol