I did however get the engine with a single pMag and the other side empty but set up for me to install the second pMag (shorter mounting studs and such). I got a $500 credit for not getting the mag. The engine will be run on the test stand with the single pMag and a "shop mag" on the other side. They will take the shop mag off before shipping.
I also got the AirFlow Performance fuel injection system at no additional cost. The engine should arrive in a couple of weeks.
Jeff at Thunderbolt is setting a new customer friendly level of service for Lycoming.