Advice needed

105 mph is spot on with a 12.81, That car with a 11:1 stroker should be in the 11's
My 360 at 9:1 and 2900 lbs runs 11:60's with a lot less head and cam
What RPM do you shift at, I would suggest no more than 5500
A cam in the 250 @ 050 range would probably help a lot