Dist cap help needed

[poppa]

Hey all. Summers coming quick. When I got my car the Mallory distributor and a cap were there. No numbers or anything.I would like to get that same cap but I don't know make or what it is from. I got a Mallory but it's not as 'beefy'. The contacts are probably half as big as the other one. Since I swapped this it is back to being very hard to start when at temp. I will check other stuff this weekend but , would still like the beefier cap. Note the hold down on the cap pic. Thanks for reading this far.