We have had for quite some time now a perfect fit engine insulator pad made of waterproof Dynamat material. It provides superior sound insulation as well as a perfect fit. The best thing is that it is waterproof so it will not act like a sponge against the firewall and rot it out like so many of the originals and cheap reproductions do Priced at 199.50 and the appearance will pass the strictest concours muster of the 75 76 model 914s, and similar enough in texture to the 73 74 modelsClick to view attachment