looking for old sled to set up for grass drags. any suggestion?

If I was going to build a grass drag sled It would be over 500cc and make it light as possable.

Yamaha bravo with a 136 inch skid and one raped ape three holer with clutch weights filed with a groove to allow it to engage at 7000 rpm with a vengeance. Very light sled. Don't need much for a suspension if your just racing. I have never seen anyone do this but I had it in the back of my mind when I was younger and lived on the edge L.O.L. I think you would have to beef up the chaincase though HAHA HAHA.

Well I just got a 86 Polaris Indy 600 for $75 that i am going build just for grass drags. I know this post is 2 years old but thats ok. The sled is a basket case but the engine ran when taken apart. Pic to come soon.