We put a Roush motor in a Superformance for a customer. Within 250 miles developed several
oil leaks (my Ford Crate motors don't)
Also, the compression is so high that finding high enough Octane Premium to run in Denver is difficult.
Why does eveyone have to have the baddest motor they can find and be frustrated with performance issues? Make a reliable Cobra that you can enjoy driving instead of tinkering your weekends away in hopes to drive another day!
Build smart, build conservative and haul --ss every weekend!