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Welcome from Maryland. Can't tell from the pictures but there's a cab and chassis rear and it typically came without a bed and people/dealers would put flat beds or utility beds on them. They appear to be the width of a regular axles with bud wheels. I got my led lights for my clearance lights off eBay. Paid $8 for 10 so I was able to put them in the other sockets that have 194 bulbs. Check out this item I found on eBay: http://pages.ebay.com/motors/link/?nav=item.view&id=201378192648&alt=web But I got white LEDs thinking they would brighter and they are but they change the color of the clearance lights to a yellow/greenish color. Also with LEDs if you don't know they only work one way so I put mine in with The lights on but I'm going to be swapping them with yellow ones soon as that's what's the people who sell the clearance lights sell with them
Those rims should be pretty cheap never got some from the junk yard but someone should have some for cheap. You can pretty much use rims off anything if it has the 8 x 6.5 pattern, Ford changed up first in 98 (99 style) chevy was in 2011 and not sure if dodge ever did