i have a 1970 nova that i,m about to finally get going 1 last thing i got to do is swap out deff. i just had 373 & poss put in my 76 nova "didn't know i would be getting the 70" so seeing i'm on a budget i would like to put the 76 into the 70. can anyone tell me what will i have to do to make the 76 fit into the 70.