Ah yes - slips (errors?) in judgement. Many of those with this build. So many that I have been able to pay for most of my car show trips with those screw ups. A major one that comes to mind - and again, Wilwood as mentioned above. When I decided to go with rear discs, I made a call to Wilwood and was assured that the older style spot caliper e-brake on 12" rotors would fit in the 15" Billet Specialty wheels that I measured and provide dimensions for to be sure. I really like those new 17" wheels Lots of clearance.

The cost of that error in sanity - only about $900. The 15's - well I DO need a trailer with matching wheels.

That butt kicker - mine is a direct drive 1750 rpm motor powered version to make sure it inflicts lots of booting