I have seen a few of such swaps.... really not such a bad idea. Trouble is, even as prevalent as their usage was, the 4BT motors are still hideously expensive.

 

how much backspacing do your wheels have?

 

That is true. And for only 120 HP stock, a $3000-$5000 4BT seems like its not worth it. But there is always a little hope if you just look. A junkyard from a bread/Frito-Lay truck can yield a good motor and possibly farms. I know of someone who has one laying around just not sure if he will sell it for a decent price...