My first Mopar

LocuMob said
Don't worry about the extra length, you can correct that with new lines. A dual circuit master cylinder will always be longer than a single circuit master cylinder.

Its definitely an issue. The long master cylinder is practically touching the exhaust. There would be about a 1/8" of clearance. I did find one that is only 6.9" and is much less expensive than the 6.5" wilwood.
Some pics!