Hi-po 60 and 61 Fords from the factory have 3" front brakes, 15" wheels, 3/8" fuel line, Front brake line is re-routed to the front X-member only on the 61, my 60 360/352 Starliner has the std. routed brake line attached to the round cross member under the engine. I doubt the factory re-routed as a running change as my 60 'Liner was late production, built April 1960 in L.A. [same as all other 60 Fords regardless of engine] HD springs, short branch exhaust manifolds, 4 pinion rear end and all Hi-pos were standard transmission only, with or without O/D. Rear end ratio was usually 3.56 or 4.11. Look for the "broadcast sheet" tucked inside the pass. door panel, that is where I found both of mine for the 60 and the 61 [both L.A. built cars]. 3" front brakes were also used on station wagons, police packages and I believe Taxi cabs. 61 390/401 hp came as a single 4 bbl and the 3 x 2 setup was wrapped in a plastic bag and put in the trunk for dealer installation as was the B/W 4 sp. when it was released mid year IIRC. Shop manuals do not have any info on hi-po cars other than info and specs on 4 bbl Holley carbs. Nothing on 6bbl. as usually shop manuals were in print before the actual release date of that model year. No actual hi-po info is found in both my 60 and 61 shop manuals. Disclaimer: Both my hi-po Starliners were L.A. built and I have seen minor differences in other cars built in another assembly plants so there is no hard-fast rules regarding production.