With a RHD the lines are quite a bit more complicated but there is no reason to run anything other than the GM version compressor. Pick up a mastercool crimper, about $160USD, and build them yourself. I know shipping won't be great but if you cannot source them in the UK check out coldhose.com.

You can run reduced barrier to help with routing but make sure you get the right dies for the crimper.

I would avoid AN completely if possible. It's just not meant for that pressure. Double flare everywhere is a must. Aluminum is just too soft on the fittings.

Second the quality flare tool. I used a cheap one prior and for a couple lines it's fine. For a project like yours get a quality unit that can be held in a vise.

Have you thought about a no regulator closed loop fuel system or using a fuel flow meter on the regulator return? Thinking of ways to optimize pump flow.

Just because.

You should be able to get away with 4ga if using high quality welding wire which I'm sure you are. It starts my 440 12:1 just fine. I've not noticed any hot spots on connections after turn over sessions while tuning.

Very nice. Now back to Blakes usual overly complex shenanigans.

What are you using for the frequency? Any noise from the low max freq of the megasquirt?

I looked at the gears again. Even if I could find a 2.26 or 2.47 rear the 7th just doesn't work on the e9x boxes. Those gears are super rare though. Early 80's F150's. The 2.26 isn't terrible though. 2400RPM at 80MPH with a 25" tall tire. Plus 40years of metallurgy in strength. That statement just made me feel old.

Super jealous of finding a box that cheap and that close. I WILL have to have one shipped.

Did Domi tell you what they do with the old control boards? I'd be curious to put an e9x board into an f1x trans and have the maxx ECU control it directly via can. The mechatronics are the same it looks like. Just the controller is different.