[VWNate1]

Higher CR , I see .

Are the valves the same size ? .

As I work my engines pretty hard and want them to last decades at the same time , I typically build them with low CR and big valves so they breathe well and run cool , you can work 'em mighty hard and they don't break , overheat , knock or diesel / ping on pump gas either .

FWIW , I'm using an original unrestored 1977 Nova GM HEI setup (the one with separate ignition coil) on my clapped out 250 CID engine and it never misses on the rare occasion I run it up to 5,000 RPM's .

The linked one looks nice and @ $60 is a steal but maybe not necessary ? .