interurbans

Building 2 of these and I have hot found anything regarding the size of the wheels, or the length of the trucks. Does anyone have any input, or knowledge regarding this, got kits off eBay and not sure that I got all of the directions in the kits. tThanks for the help

If in theory, I could cobble together Interurban cars for say, $120 or less per car (not including shipping costs), would that be reasonable. Here's what would be put together, in theory: "Cincinnati Curved Side" cars: ~ $100 or so... "Jewett Combine" cars: ~ $110 or so... "IRR Lightweights"...