I got my hands on an ‘89 JTM45 Reissue and a 1960BX cab. Currently, it’s got sovtek tubes but I want something better. I’m an AC/DC nut, the older Bon Scott stuff. That being said, I have 2 SGs and the Gretsch Malcolm Young model. I’m looking to emulate that vintage AC/DC sound. What tubes should I go with? I know nothing when it comes to brands of tubes. Currently, I’m playing thru a krank rev jr pro (also has sovteks). It’s decent, but it’s more of a “metal” amp. So, any experienced advice would be appreciated!