I have my engine as far back as possible. Tight enough that I can't run the factory SRV module on the back of the SRT8 intake, had to run the MMX block off plate. With the engine this far back, it BARELY clears the power rack and pinion, like 1/8" clearance.... No other interference other than that possible one. I had to machine some OD off the steering shaft though to clear the TTI headers. You could also machine the spacers on the R&P to move it forward a little bit which would help with steering shaft/header clearance.