You might want to stop over to the site "RedPowerMagazine" and ask that question. Site's sponsored by the IHC Collector's magazine "Red Power" Several people have 300/330/350 utilities. The 340 utility is actually the newer vintage, late 50's/early 60's built with the 460/560's, and a smaller frame size but similar HP to the other tractors. The 300/350 has many features in common or similar to the old Farmall H, the 330 uses the same frame but the engine used in the 340 which was smaller displacement than the 300/350.