My son put a double U-joint Borgeson in his truck> I have the single. The only thing you will need to do is remove the rag joint bracket so the upper joint can go on.
NOTE: Make darn sure you put a flat on the shaft for the set pin to come up against. If, for some strange reason it were to ever come loose, it would really suck to have it fall off on the freeway doing 70. Not saying that will happen, nor have I heard of it happening, I'm just careful.
The difference between the single and the double in handling is not noticeable.
Have fun
Dave