It depends a lot on what you are after. Pity the Force 7 was crushed...Hard to believe that car came out in 1973...The 4.4 came out in two compression ratios , those with red rocker covers were the truck ones and were lower than the blue cover car engines. If you are not going to race the car the 4.4 will give a nice boost in bottom end but it only has a two bolt main so isn't as stiff as the 4.6 X bolt block. That was what killed in in F5000 project but for road car it won't be an issue. While it chokes up in the high revs its still better than the 3500 and the 4 bbl manifold takes the power way up into 4,6 territory and over. Price wise i paid about AUS $200 for mine disassembled with one broken piston in the early 1980s. Back then you could buy the truck engines in crates for the same amount. Which is what the guy i bought it off did.