Hello all , Might I just say This site is awsome! I love my K5 and it looks like there are ALOT of people like me! Right on! Ok on to the stuff! I have a 76 GMC Jimmy, 1/2 ton K5 My tailgate is cracked and the window crank assembly is missing teeth so the window wont roll up all the way. My question is: If i cant find replacement tailgate of same year "76" , Will a newer model tailgate fit fine? Maybe an 80's model powerwindow/tailgate? Will i need to do any modification beyond wireing?