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					Originally Posted by N.RotaryTech  Try and figure out why an fb drive-shaft wont bolt up. Maybe just drill new holes. | 
	
 the likely reason is that there were two bolt patterns on the Gen I cars. if i recall (it's been a while) it's S1/S2 vs. S3. however, it could have been '79-'82 vs. '83-'85. either way, there were two and they will NOT bolt up. i won't comment on drilling as an option because i always tried to keep one of each in my cache of parts. also, because reliability issues may creep on the scene.