it's not SUPER STOCK II 'til May '63 with the battery in the trunk (among other things)

Plymouth "MAX WEDGE" were officially:

1962 = 413 SUPER STOCK

1963 = 426 SUPER STOCK (I)
1963 = 426 SUPER STOCK II - started May '63

1964 = 426 SUPER STOCK III

low compression & high compression "MAX WEDGE" engines were available in each of the above model years & configurations

I think (advertised):
1962 413MW: LC = 405hp & HC = 420hp
1963 426MW: LC = 415hp & HC = 425hp
1964 426MW: LC = 415hp & HC = 425hp

Years ago when I had 1963 lc max wedges I assumed they were stage IIs but over time.. showed me that Chrysler made it really confusing....... Heads and carbs trunk mounted batteries and aluminum front ends.........GEEZ.

Might have proof of the changes between stage I and II's. Compare TSB #63-26B dated July 17,1963 and TSB 63-26 dated Dec 14,1962 and.. TSB 63-26A dated Jan 9 1963.

I've been through a few hundred and done for the day.

are '286 iron heads worth fooling with to use on a mild build, or should a guy just jump to the newer aluminum heads which require a total go through anyway just to be sure on quality ?