[jmack91z28]

My opinion is this isn't a popular topic, at least not here.

My 6BT with NV4500 in my dodge is the slowest thing i've ever owned/driven. Gets good mileage, about 18 mpg average. Pulls decent. My old 94 chevy with a 454 pulled way better but at the cost of 8 mpg... Parts are far more expensive, my (indestructible P pump) injection pump went out last year, costed me $2200 for a rebuild. You can build a nice small block for that much.

I dunno, I don't buy into the cummins hype even though I own one. A swap would be very expensive, around 6-8 thousand? You can buy a lot of gasoline for that, years and years and years of gasoline.

4BT's aren't balanced, so they'll rattle your teeth at idle. I've seen many a 4bt swap that ultimately ended in the owner selling the vehicle because of the harmonics and vibrations.

You want good mileage and torque, and affordability? Why not an older stovebolt 261 or so. It'll produce more power than a 4bt at less weight and costs and with fuel that costs 50 to 70 cents cheaper a gallon.

Just my opinion and experience on it.