Master cylinder/booster on 440 Duster

So it might work assuming you're running stock style heads and valve covers. TrickFlows are about 1/2" taller than stock style heads and cast/fabricated valve covers are pretty tall compared to the old stamp steel ones. Personally I can't tried to use a vacuum style booster BUT the TF Heads and cast valve covers are causing me a ton of headaches with the hydroboost I'm installing.