Carb recommendations for my 340

performer rpm is a square bore, which means you'd have to run a spacer/adapter. also no choke well. so if you wanted to run a TQ you'd need to find a superquad, electric choke conversion parts if those exist, or rig up a manual choke.
No conversion parts available.
Be crafty…..
aftermarket dual plane spread bore options are: performer, weiand 8007, or offy 5685.

(For the OP just incase…)
The Offy is over a $600 intake.
The Weiand's have no choke well.
(Or coil mount bosses)
The Performer is a light weight stock replacement intake that has the choke well.

if you like tuning carbs, TQ's are great. if you want to put something on and not have to fuss with it there's better options. options that involve not hunting down parts and paying thru the nose for them.
Better options! I agree.
TQ parts are available at (IIRC) The Carb Shop.

Everything is pricey no matter how you slice it. Check rod or jet pair prices for Edelbrock carbs vs The Crab Shops TQ rods and jets. They also have rebuild kits.