Yep....I have one.  Unfortunately the shipping is expensive as it is heavy.  It is cheapest to ship in the medium Flat Rate Box at $ 12.65 each way.  If you need to tighten the flywheel nut, then you also need the long deep socket, and the flywheel holder that I made.

I also want $ 15 for the use of my tools and for the time it takes me to pack everything up, make a shipping label, drive to the post office, and the fooling around on PayPal sending the money back and the 3% fees that are going to charge.

So...the cost would be $ 12.65 both ways, and $ 15.00....$ 40.30.  You would send me a $ 100 deposit for all the tools on PayPal, and I would then send you back $ 72.35 when I got the tools back undamaged.

Dave
 

Thanks anyways, but I purchase the tool I needed from a fender on ebay.

I need something to hold the flywheel from turning when I torque the nut?

That's what impact wrenches are for

Dave is, as he is so often,correct with regard to the angst of a screw up.
If you can find a nut and bolt of the same thread and approximate hardness to test the impact on?
In that time a tool could be built.
I used the impact on the clutch,,, you'll do as you see fit. I'd want to see the compressor pressure and play with a model nut and bolt in the vise. Be aware that when the crankshaft moves some of the torque is lost.