When I got this burb I thought good, I read somewhere that this big tank will fit a M1009. Today I dropped my tank and wished I didn't. Twisted off a strap bolt and played half the day putting it all back together. It was my fault for not measuring before I started. The tank will fit between the frame rails but not between the crossmembers. Its 8 inches or so longer than the original tank. The original tank fits in there tight, the only way to get a bigger tank in there would be to make it deeper, not longer or wider.