What is a good spin aircraft for someone that is heavy? I've been trying to get a spin endorsement for my CFI, but I've been having a problem trying to find an airplane that I can do it in.  

I'm 280 built like a linebacker.  I'm not that "fat" just heavy.  Losing weight for me isn't really a realistic option since I'm on a time crunch. 

The closest thing I have found is an Xtreme Decathlon Citabria, but the CFI I go up with needs to weight 110lbs or less, and I'll probably have to stop for fuel in the middle of the flight.

I was told maybe a 172P model might work since it's utility class is 2000lbs, but I've not found one anywhere locally to verify this and see if they would be willing to let me spin the aircraft.

I'm in DFW, but I'd like to keep this question as generic as possible since others may want to know what other aircraft options there are.  But if you know of and airplane in the DFW area (or surrounding areas) please let me know.
A Cherokee 140 should do it. Fill to just below the tabs and get an instructor that weigs 180 lbs.