Slant six timing issues

So update. I tossed in the old distributor and played with the fuel mixture on the metering block and got it to idle somewhat normally. I think evryones suspisions about the new distributor was right. The vaccum advance may have been junk so i just snagged the cap/rotor and new seals off it. Im keeping it for parts. Issue im having now is the exaust will pop randomly at idle but not during accelerarion any ideas guys?. Also have yet to test drive it. Worried im gonna get stuck on the side of the road so im waiting for my buddy with tow straps to be off work lol