On October 21, 2000, about 1030 eastern daylight time, a Jim Price Pitts Special S, N56JP, registered to several individuals, and a Boeing A75N1 (PT17), N49713, registered to an individual, collided during landing rollout at Indiantown Airport, Indiantown, Florida, while on Title 14 CFR Part 91 personal flights. Visual meteorological conditions prevailed at the time and no flight plans were filed for either flight. Both aircraft received substantial damage and the commercial-rated pilots on both aircraft were not injured. N56JP departed from Indiantown, the same day, about 1000. N49173 departed from Indiantown, the same day, about 0930. The pilot of N56JP stated that after departing from Indiantown Airport, he flew around the local area. After about 30 minutes, he returned to Indiantown Airport for landing. The wind was from the northeast and he elected to land on runway 13. He announced is intention on the Unicom radio frequency, and there was a lot of transmissions on the frequencies from pilots at two other local airports. During landing rollout, at about 30 mph, he saw N49173, to the right and immediately forward. He attempted to veer left an collided with lower right wing of N49173. Both airplanes then taxied to the ramp. The pilot of N49713 stated that after departing from Indiantown Airport, he flew around the local area. After about 55 minutes, he return to Indiantown Airport for landing. He called on the Unicom frequency, requesting traffic, but did not get a response. He crossed over the airport at 1,500 feet and observed for traffic. He saw none. The wind was out of the northeast, and he elected to land on runway 31. He made radio calls while entering the pattern, downwind, base, and on final approach. After landing, he was turning off the runway, and was about 45 degrees to the runway, when N56JP collided with the lower right wing of his aircraft.