I contacted Dagger to buy a seat and they will sell one to you thru a dealer. I imagine the other manufacturers would too. Find one you like and call the manufacturer unless you have the time and desire to build your own, in which case Ross Leidy has a wonderful description and pictures on his web site showing how he built his seat. Just guessing, but he probably had 25 or 30 hours invested in the seat.......you can get one for under $100