I have had 3 CBM rail motors (4 if you include the recent rebuild on my Camaro 540 Dart motor). Was involved in the build of 2 of the 3 rail motors. One was exactly what you had and only difference in second was I upgraded to a 4.5 blower and some internals to handle it. I now have a Redline motor in my rail. The choice was mostly because I bought one of Pont’s that was newly rebuilt by them.
Bruce at CBM is absolutely stealer to deal with! Feels just like you’re talking to one of your buddies every time you chat with him. His customer service is above and beyond. Heck on my last trip I called him to ask about a tranny shifter issue I was having (take note that in this rail neither the trans nor the motor was from him). Even though it was late he answered the phone and gave me all kinds of helpful insight. A big part of the reason I am so deeply addicted to this sport is guys like him!!
This takes nothing away from my experience with Redline. Their programmer/tuner Chan is one of the best! He has been extremely patient helping me work through a hesitation in the motor.
Nobody is gonna be inexpensive compared to another but for me being 1000 miles away from build communication is key! Need someone who will pickup the phone or at least get back to me in a decent amount of time. When I say this I’m talking before and after the sale.