Newbie looking for a tuner

[61 Blue Impala]

Howdy, newbie here. I just upgraded to a crate LS3 430HP in my 61 Impala. I had an LS1 when I built the car 12 years ago, but it was getting tired after 240,000 miles and so I got a deal and did the swap. I stayed with my LS1 computer because I wanted to use my harness. My harness is 3 feet longer as I have my computer under the driver?s seat in a sealed box. I also wanted to use my serpentine system and other stuff. So with that all said, I now need a tuner to obviously make the engine more efficient and run better. I live in Grass Valley in northern California, but can drive to Sacramento to work with the tuner. The engine has a "base" tune, meaning it runs, but needs finer configuration. I don't need mor HP, I don't drage race or auto cross. Just drive across the US. It should be noted that I am using the LS1 MAF at 84mm but the throttle body is 92mm. I also switched out the TB to cable. A guy named Mark Romans tuned the LS1 but I have not been able to get a hold of him.
Any recommendations for a great tuner? Thanks in advance!

[2xLS1]

Are you using a Lingenfelter converter box to run that 58X engine with a 24X PCM? I don't see how a calibration for a LS1 can possibly be running a LS3 430HP engine with out major changes even with the converter box.

[61 Blue Impala]

Yes on lingenfelder. Had to add converters on the fuel injectors, but that's about it. Any other suggestions?

[61 Blue Impala]

BTW, you have a recommendation?

[2xLS1]

No, not in your area, but there is more to making the injectors work besides the plug converters I assume you are talking about. Those LS3 injectors flow a lot more than LS1 injectors. I wouldn't run it until the tune is changed. There are remote tuners on this forum. Check out PCM of North Carolina. His user name here is Alvin.

[61 Blue Impala]

No, not in your area, but there is more to making the injectors work besides the plug converters I assume you are talking about. Those LS3 injectors flow a lot more than LS1 injectors. I wouldn't run it until the tune is changed.

I had a base tune loaded before starting the engine. Just need some fine tuning, no pun intended.