Are your aluminum painted parts any different from the usual suspect parts on an engine?
Care to share if they are?
By the way, a while back I meticulously fabricated an aluminum trans cross member and even though it is recessed back into the chassis trans bridge mount points thus making it stronger, my welder guy got reserved and perplexed about its use, so I passed on it and it is now a wall piece.
The torque monster that this car can be could/would most probably turn it into a metal Fusilli. Some guys on here have cracked their trans members as a stock unit. I still find that hard to believe.
My steel one has survived for all these years.