there is a dyno near Bloomington. Extreme Performance Online Service Page
Extreme Performance
5499 W State Road 46 Bloomington, IN 47404-9697
(812) 876-3753
I am going there next week to Dyno the Cobra. You are welcome to join! I called and it is $75 for two pulls or $150 an hour If you are going to tune and run.
Cozzolino Motorsports on the southwest side has a dyno jet. They have dyno days, and they occassionally rent out there dyno for tuning sessions. Not sure how they offer random dyno times like that though.