Montana’s really good about that.
It’s how I got my ‘92 HMMWV titled. reseller/company bought used at auction, off govt planet orsomewhere, did enough to get them working, powerwashed/cleaned up a bit, got titles from MT which bypassed SF97 off-road restrictions that would’ve kept them from being titled in MD.
But as tempting as it is “aLl tHaT cAtaLytIC cOnVerTer Duz iz ROb tHe EngiNe pOwR! DeRp!”
It’s a “guy” thing”.
Adding catalytic converter to older car increases power.