To add to Pauls comment, I think the shaft mounted rockers are unique, any scrub built for performance goes back to this style.
To Me it is the Harley Davison of all v8 engines. Takes a little tinkering, but they always run, are stout, great sounding and will perform.
55 Vicky & customline
58 Rack Dump, 55 F350 yard truck, 57 F100
59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?