before you get an off the shelf sump look into having one made, it might be cheaper.
its quite a simple milling job to knock up a 1"/1.5" spacer then all you will need would be two sump gaskets and longer bolts. the most expensive bit would be the block of alloy but shop around.
this is assuming the XR sump is a simple tray of course, and you could lower it by that much without fouling something.
and 30hp from a 400 trail bike is not bad, my xt600e doesnt give a lot more than that, these bikes are all about torque not whizzing around a racetrack.
err.....and its only had one oil change in 5 years, but thats neglect, not some wondrous new oil
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dave
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