anguswilly
+1y
Don't file the incorrect info, the 13B swap might be cool for a 2WD but in a 4x4 (especially one with extra weight) you won't find a 13B very useful - imagine revving your truck to 6K RPM to get power all the time - that G6 motor you have is actually quite powerful of it's in good shape (yours is probably tired) Even if you didn't mind revving it all the time, you'll have completely wrong gearing to support that engine.
Also the 13B will not, not, not simply "bolt up" and you will find a LOT of other "issues" trying to swap it in.
Stick to the G6 motor and just buy a complete rebuild, they can be had for around $1200 with a brand NEW head. That is less than any "swap" will cost you and you'll be surprised how much power it'll have - I know I was.