It looks like someone gave up partially through their attempt at this and is selling their project on ebay:

2001 V70 w/ M56 manual tran

Looks like it got relisted, wonder if it had an issue not described in the listing, or just a non-paying bidder.

1994 940 42k

Again, not mine, just keep finding these low mileage Volvos for sale:

2002 C70 11k

Again, not mine, just found this while browsing (though it is about an hour away from me):
Volvo 760 59k

I found this on youtube. A little slow going at the beginning, but you can see some concept drawings, testing models, and other stuff later on.
youtu.be/H2Njvne12so

This isn't my car nor am I affiliated with the seller. I'm just a chronic ebay browser, heh.

cgi.ebay.com/ebaymotors/1994-VOLVO-940-ONE-OWNER-ORIGINAL-42K-MILES-CLEAN-NON-SMOKER-GAS-SAVE-NO-RESERVE-/160920318943?pt=US_Cars_Trucks&hash=item25779933df#ht_32143wt_1165

Not sure if I understand what you said correctly, but did you check BOTH ignition/power modules? The second one is on the opposite side of the manifold 'ball' as the first one.

I know these things are frustrating, hang in there.

This isn't mine and I'm not affiliated with the seller, but thought some folks here might be interested in a very low mileage s70:

1999 s70 GLT 34k miles

I recently purchased a VIDA/DICE set and have it up and running on a laptop, so anyone in the Upstate South Carolina area who needs help/access to software give me a PM. I'm in Anderson, SC. I've also got VADIS, but it's on my desktop computer, not laptop. I can help you get instructions, part #s, e...

May be the ignition module or several other things. Each of the modules controls 3 of the coils. I forget which one, maybe it was 1,3,5 on the front one and 2,4,6 on the back one? Don't take my word for it, look it up somewhere. If you're getting any type of misfire, it could be the wiring to your c...