I built one from 2" muffler pipe for doing calibration stuff on 2.2 and 2.5 engines.
Works good! Factory motor mounts, used a old transaxle case that the diff blew out, Omin aluminum radiator, wiring harness from an 88 CSX-T, Napa battery and a 3 gallon fuel jug.
Has casters so I can roll it about, nice and sturdy too.
