Yeah, there's (6) 3/8 pipe plugs, 2 front, 2 rear, 2 in front valley.
Stock ones have square sockets instead of hex, not that it matters.
Square socket ones available from Au-Ve-Co & Doorman.
Summit cam, check journal sizes, oil relief holes in rear journal,
and groove and distrib gear oil hole in front journal.
Distributor and Cam gear are a "touchy" area.
Make sure cam snout Bolt isn't too long, bottoms out before pulling down,
and that they heavy flat washer is flat and seals well against the dist gear face.
Don't forget the crank oil slinger in front of the crank sprocket.
Threads here seem to suggest quality issues have existed before.
Seesm one talked about the cam breaking in half.
Guess you searched "Summit cam" in this forum.
New Con Rod bearings lack the Oil Squirter Notches.
Opinions vary on if they're needed or not.
If ya want'em in there, you'll have to notch'em yorself.
There's enough INFO and horror stories here to scare a person.
Guess that's appropriate since it's almost Halloween.
Trick or Treat ...........
I've had good luck with AMC Motors.
Have ya checked out www.AMCFORUMS.COM ?
Someone here said AMC stopped using them, but I'd be sure and install
the little plastic button in the bottom of the oil pick-up tube
that prevents it from sucking up against the pan.