OK so my friend found this mini pocket bike on the side of the road and puts it in his car and brings it to me. i look at it and fist thing is both tires are flat the parts have quite a bit of rust but the frame looks like its in good shape. the worsting is it electric and the battery is dead so i strip the bike put the motor back in and just tap the to main wires to 12v battery and it snaps the chain instantly. so i mine as well make it gas. fist ting is first stretch the frame so my knees don't hit the handle bars, id say about 2 feet and lift the seat 6" to make room for the predator engine and just weld the entire top t where ever feel comfortable. And thats exactly what i did and also widened the bottom an inch and a half so the predator looks like it belongs there.