New carbs??..

I'm wanting to take the final tuning mystery away from my engine...
I've always had these mismatched dual quads.. and Edelbrock 1406 upfront and a Carter performance 625 in the back.. I've got my wideband O2 sensor pretty happy with the carburetors as well as my plugs...
There is a little difference from front to back but I'm always wondering if it's just me on the freeway and the front carburetor getting more forced air and leaning the front a little bit.. or is it the fact that the rear carburetor is a little bigger...
Honestly I just like at this point to buy two brand new carburetors and start from scratch... The tunnel ram is definitely a square bore situation. I would rather stay with the Carter style linkage and not have Holley's turn sideways and another hundred dollars and funky sideways linkage... From what I understand I can get a Holley style carburetor but still in the forward Square bore configuration??..
If it all possible I would rather stay with the Carter Edelbrock style as I'm more familiar actually I'm pretty good with metering rods and such..
For me to pull this off sometime here in the months to come it's going to be an extremely budget-minded deal.. with that said hopefully keeping it under $250 each.. of course my go-to Speedmaster has $177 carburetors which I could have probably had $100 each last weekend :BangHead:.. I thought I seen some Street demons that were real pretty and shiny for 229 each on eBay or somewhere...
Please save the save your money up for better thousand-dollar carburetors comments because they're going to go in one ear and out the other I don't have the money for that. at the moment I don't even have the money for what I'm talking about... But where there's a will there's a way... Suggestions and comments welcome as always and thank you men...