KUDOS 1 THOUSAND TIMES OVER!
though, if you wanna stay inline, have something different (don't we all) be fast, and fuel efficient, and stay Ford, why not try a 2.3/2.5 liter out of a ranger, depending how brave you are when it comes to electronics, you can keep it injected with a distributerless ignition, or get an older engine and have points and a carb, or anything in between, you can turbo it, or run insane compression on it, and run E-85, or E-98, the sky is the limit with those motors, or you could run a DOHC zeTEC in it, which make pretty mean offy look alikes (i know its not original, but its HELLA cheaper, and the last time i checked, ford still pumps these out like mad, not the case for the offenhauser 4's, and thats what hot roddings all about, right? recycle what you have, use whats cheap and effective, etc)
or, if you wanna go with six, but cut back on the length, why not try a SB ford six?