Sounds like a very nice car. I can't answer the A66 question but I am sure others can.
I would not waste a dime on Galen, there are others in the hobby that can and do the same thing that are as good or better, to that point you can pretty much do your own verification these days especially if you have the build sheet.
70 Challenger RT 440-6, 73 Cuda (under const)
05 Durango, 99 Dakota, 01 Ram 4x4, 14 2500 4X4, 10 PCP Challenger RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR, 61 Jeep FC170
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)