The 6.5l turbo parts do just bolt on and will work
I recently put all the 6.5l turbo diesel parts on my 6.2l 1989-1990 K1500 pickup. It all just bolts on and will really improve the performance. I also swapped in the a NV4500 trans at the same time. The performance is amazing compared to what it was before. I did go to the Banks website and turned up the injection pump as described in their directions sheet. You will also probably have to put two exhaust manifold gaskets on the passenger side manifold for a bit more clearance to the injectors. You will also have to figure out how you will control boost...Left unchecked it will run up to 20lb easy and your head gaskets will not survive long at those pressures. Mine lasted all of two months that way:(. I installed Felpro .010 thicker head gaskets to drop compession one point for a little more margin after that.