What all is needed to make my 1990 4 cyl toyota pickup a 6 cyl?

I bought a 6cyl toyota pickup for the motor, mine has a 4cyl. Can I use my 4cyl bellhousing? If not can I use my clutch and transfer case? (4 wheel drive). Thanks for anyones help.What all is needed to make my 1990 4 cyl toyota pickup a 6 cyl?The way to find out is to cotact your local salvage yard they can tell you what parts are inter changable But i'll be willing to bet they are notWhat all is needed to make my 1990 4 cyl toyota pickup a 6 cyl?Cant' use the bellhousing,but if your 4 has overhead cam, put a 3/2 carb set on it,with dual exhaust, then its just as powerful as the 6.