I have an l3410 with the 3 cylinder engine. It currently has 3500 hours and I’m starting to see small metal shavings in the oil via the dipstick. I haven’t seen exactly which engine it is but I think it’s the 33hp D1703. I have access to a 43hp v2203 4cylinder engine. I have done the research and the v2203 is used in the same chassis as my tractor. I guess I am asking if it would be easier to do a motor swap or see about a rebuild(if the block is viable). I never have done an engine swap on a tractor but me and my dad have a lot of experience in automotive engines and such. I’m just really asking for advise and I’m giving yall my options. I’m just a whippersnapper and want as much feedback from those that are wiser than me