With the Roush 427 you should be able to get close to a 10 sec. 1/4.
I'm running a SPF with a 396w (tame build)
not sure on the 0-60 (guessing low 3.2-3.5 seconds)
1/4 mile 11.7 sec
60' time is 1.5 seconds
If you want to get use to the car with a more tame motor I would gladly let you use my 396W for a year or two and install your Roush 427w in my car for a break in. LOL
I'll even let you know how deep into the 10's I can get it.