That 380 hp rating for the Mopar Performance 360 IS NET hp. Rather impressive really, it actually makes MORE power than any of the old 440's in Imperials, which of course were rated in SAE Gross numbers. I agree that the 380 hp engine might be a bit overkill for an '81-'83 Imp where emissions are a concern, but the 300 hp is a bit more sedate. Another option might be to check into an engine out of a wrecked 5.9L (360)R/T Dakota. That engine is rated at 250 hp, unsure of the torque rating, but it's good enough to get the Dakota to run low 15's and it IS emissions legal as it's a production engine. --- TheTanSedan@xxxxxxx wrote: > As to passing emissions, a free-flow cat (RANDOM > TECHNOLOGY) and a > mandrel-bent 3.0" single exhasut won't give up > enough power to matter. But > the cam in the 380hp version requires a lot more > numerical gear and may not > be at all ideal for running power accessories. > Torque is the only thing that > matters above 4000 lbs. Does that > transmission/driveshaft/rear > axle/suspension have the guts to handle it is the > question I'd be asking > about this swap. > > Rule of thumb for converting gross to net is deduct > 22-25%. > __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com