Transmission Blankets - whatcha use??

All the cars are so different it is hard to say. I had to really stretch the tunnel with an air hammer on the passenger side to get mine to clear with my 904. I have also read where others have put them on 727s with no mods other than hammering the lip flat. My car was a factory 727 car so if the tunnels were different(I don't believe they are) mine would have the larger one.