mine is solid axle rear, so 2 wheel drive positrac, dad built scrub brakes for it, so those work...ehhh good enough for a 2 acre lot it's not fast, top speed is approximately 35, but it's got enough ass to pull around likwid with no issues at all... you could still build it today for less than $300 probably, less than 500 definitely... 4 wheels, steering wheel, a pair of steering arm bearings, a half a dozen other bearings, centrifugal clutch, tecumseh/briggs motor, throttle cable, chain and large sprocket, and then if you wanted to splurge and put a nice disk brake system on it, that might cost $50. some scrap steel, and an old seat, you're set.