I just installed a 4" tough country lift on my 72 blazer and it looks like I am going to need to get both my drivelines extended. I couldn't get either one to bolt into the yolk even at full extension. Anyway, I currently have a 350/205 combo. In the future I would like to swap it for a 465/205. I think I have been told that these 2 combos are exactly the same size, and that the same drivelines should work. I just want to make sure before I spend the cash on extending the drivelines now, and then need to do it again when I swap the transmissions.