I bought a home made deck-over trailer. The trailer seems to be built well with a expanded metal floor. The only problem is the axles, they are not as beefy as I would like so I am looking to change it. So do I just buy a complete axle kit from a supplier or is there a better way. I've read here about using a vehicle axle, will that work ,or what about something even heavier like a pickup axle? The trailer is 7 x 12 and being a deck over I don't really have to worry about making the width of the new axle match the old one. Anyone have any experience doing this?