Stock coyote motors (headers, exhaust, cold air kits) are taking 3100lb race prepped cars into the 10.50's in the coyote stock class. I've seen multiple street/strip coyote cars on various internet sites that are running low 11's and some even breaking into the 10's. This is all without power adders. Two years ago, I met a guy at the strip who was running an 8lb
vortech on an otherwise stock automatic 2011 GT. He was running high 7's in the 1/8th, and I think that was on street tires (can't remember for sure).
My brother-n-law bought a used Coyote to go in his 91 a few months back. It is an expensive swap. He gave $2500 for the motor (truck motor but still a steal!), but he still needs $800 headers, $300 k-member, $1500 control pack, Flywheel, bell housing, intake tubes, fuel system, etc...
I think in the end it will all be worth it, but it is expensive. You may be happy with it n/a, but if not, I think these cars will handle 8-12lbs on pump gas, maybe more, I'm no expert, but that seems to be what most street guys are running. At that level, I wouldn't be surprised to see well north of 600rwhp.
Joe