8.8 swap
I think you’ll like the 373 gears in it. That’s what I have. I run about 2100RPM at 80 mph with the 5.7 up front. I did the offset shackles as well. I already had 17” wheels. I’m sorry I skipped right over your post on the 904. You may be right about dropping it down. I have the 545rfe.