The drainage tile we where installing needed to be between 3-4 ft deep. The HP requirements are not alot because you go very slow, low, low at about 13-1400 rpm's on both tractors. Now traction thats a different story. If one tractor stopped, they both did. This soil is so dry it does'nt hold power. The tires would spin down in the powder dry top soils even at that low RPM. We thought about adding the 1270 also but managed to complete the project with these two. Normally we would be fighting mud in these areas, but not this year. I'm glad this job is done, sooner or later it will rain again, won't it? Rod.