If it ain't broke don't fix it is a good lesson to learn early, took me a while.
My 72 came with a Delco dizzy back in 82. I sort of "rebuilt" it in late 90's. Last year it was worn out - lot of slop in the shaft. I bought the chinesium one from Amoron. PIA to install, wrong o-ring seal. My old real NAPA cap and expensive wires fit right on - ran great for a week, then the points arm bent. Put in real Delco used parts for dead dizzy - been running great ever since. Love the straight mechanical advance.
You should scrape the aluminum terminals inside that cap - the oxide layer (an insulator) gets very thick an engine will act like it needs a tune up. Brass contacts are way better IMHO.
Use a q-tip to apply a little thin layer dielectric grease to the contact holes on the outside of cap and the inside of the spark plug boots to lessen the bonding from the heat.
